Postcode,In Use?,Latitude,Longitude,Easting,Northing,Grid Ref,Introduced,Terminated,Parish,Altitude,Country,Last Updated,Quality,LSOA Code,LSOA Name,LSOA Code 2021,LSOA Name 2021
HP1 1AB,Yes,51.749778,-0.488259,504456,206757,TL044067,2002-06-01,,"Dacorum, unparished area",114,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1AF,Yes,51.744757,-0.489325,504394,206197,TL043061,2004-04-01,,"Dacorum, unparished area",87,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1AG,Yes,51.750018,-0.475502,505337,206802,TL053068,2012-06-01,,"Dacorum, unparished area",91,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1AH,Yes,51.750256,-0.477914,505169,206825,TL051068,2004-10-01,,"Dacorum, unparished area",105,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1AJ,Yes,51.746665,-0.474877,505387,206430,TL053064,2010-11-01,,"Dacorum, unparished area",89,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1AL,Yes,51.746310,-0.474512,505413,206391,TL054063,2010-11-01,,"Dacorum, unparished area",88,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1AN,Yes,51.747112,-0.475354,505353,206479,TL053064,2009-09-01,,"Dacorum, unparished area",90,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1AP,Yes,51.746671,-0.475354,505354,206430,TL053064,2010-03-01,,"Dacorum, unparished area",90,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1AQ,Yes,51.746284,-0.475324,505357,206387,TL053063,2010-04-01,,"Dacorum, unparished area",90,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1AS,Yes,51.746023,-0.474565,505410,206359,TL054063,2011-02-01,,"Dacorum, unparished area",88,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1AT,Yes,51.745988,-0.474668,505403,206355,TL054063,2011-02-01,,"Dacorum, unparished area",88,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1AU,Yes,51.745972,-0.474784,505395,206353,TL053063,2010-11-01,,"Dacorum, unparished area",88,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1AW,Yes,51.751564,-0.485171,504665,206960,TL046069,2010-11-01,,"Dacorum, unparished area",114,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1AX,Yes,51.746665,-0.474877,505387,206430,TL053064,2011-05-01,,"Dacorum, unparished area",88,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1AY,No,51.746110,-0.475026,505378,206368,TL053063,2011-03-01,2020-10-01,"Dacorum, unparished area",89,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1AZ,Yes,51.746022,-0.474507,505414,206359,TL054063,2011-02-01,,"Dacorum, unparished area",88,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1BW,Yes,51.755556,-0.485820,504611,207403,TL046074,2022-10-01,,"Dacorum, unparished area",90,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1DU,Yes,51.749269,-0.481525,504922,206710,TL049067,1996-06-01,,"Dacorum, unparished area",101,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1EL,Yes,51.745462,-0.487548,504515,206278,TL045062,1995-07-01,,"Dacorum, unparished area",90,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1FH,No,51.750502,-0.482309,504866,206846,TL048068,2000-06-01,2001-07-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1FJ,No,51.750502,-0.482309,504866,206846,TL048068,1996-06-01,2000-06-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1FL,No,51.750439,-0.482283,504867,206839,TL048068,1996-06-01,1999-06-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1FR,No,51.750502,-0.482309,504866,206846,TL048068,2000-06-01,2001-05-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1FS,No,51.750502,-0.482309,504866,206846,TL048068,1996-06-01,2001-07-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1FW,Yes,51.745902,-0.474946,505384,206345,TL053063,2011-05-01,,"Dacorum, unparished area",89,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1FZ,Yes,51.746267,-0.484450,504728,206372,TL047063,2005-08-01,,"Dacorum, unparished area",94,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1GD,No,51.750502,-0.482309,504866,206846,TL048068,1998-12-01,2000-06-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1GF,Yes,51.745495,-0.474815,505394,206300,TL053062,2017-02-01,,"Dacorum, unparished area",88,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1GG,Yes,51.747147,-0.491983,504205,206459,TL042064,2019-12-01,,"Dacorum, unparished area",99,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1GH,Yes,51.747097,-0.491593,504232,206454,TL042064,2019-12-01,,"Dacorum, unparished area",105,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1GL,No,51.750502,-0.482309,504866,206846,TL048068,1999-06-01,2000-06-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1GR,No,51.750502,-0.482309,504866,206846,TL048068,1999-06-01,2000-06-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1GU,No,51.750502,-0.482309,504866,206846,TL048068,1999-12-01,2001-01-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1GX,No,51.750502,-0.482309,504866,206846,TL048068,1999-12-01,2001-04-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1HG,Yes,51.754737,-0.475995,505292,207326,TL052073,2006-07-01,,"Dacorum, unparished area",93,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023400,Dacorum 015E,E01023400,Dacorum 015E
HP1 1HP,Yes,51.753426,-0.475503,505329,207181,TL053071,1980-01-01,,"Dacorum, unparished area",91,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023400,Dacorum 015E,E01023400,Dacorum 015E
HP1 1HS,No,51.754529,-0.477306,505202,207301,TL052073,1980-01-01,1995-12-01,"Dacorum, unparished area",102,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023400,Dacorum 015E,E01023400,Dacorum 015E
HP1 1HU,Yes,51.754242,-0.476678,505246,207270,TL052072,1980-01-01,,"Dacorum, unparished area",98,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023400,Dacorum 015E,E01023400,Dacorum 015E
HP1 1HW,Yes,51.755877,-0.475841,505299,207453,TL052074,1980-01-01,,"Dacorum, unparished area",91,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023400,Dacorum 015E,E01023400,Dacorum 015E
HP1 1HX,Yes,51.753401,-0.477040,505222,207176,TL052071,1980-01-01,,"Dacorum, unparished area",101,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1HY,Yes,51.753234,-0.478016,505156,207156,TL051071,1980-01-01,,"Dacorum, unparished area",109,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1HZ,Yes,51.744796,-0.475678,505336,206221,TL053062,2005-07-01,,"Dacorum, unparished area",89,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1JA,Yes,51.752508,-0.477519,505191,207076,TL051070,1980-01-01,,"Dacorum, unparished area",105,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1JB,Yes,51.751915,-0.476844,505239,207011,TL052070,1980-01-01,,"Dacorum, unparished area",99,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1JD,Yes,51.752692,-0.476397,505269,207098,TL052070,1980-01-01,,"Dacorum, unparished area",96,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1JE,Yes,51.751764,-0.475588,505327,206996,TL053069,1980-01-01,,"Dacorum, unparished area",91,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1JF,Yes,51.751039,-0.477207,505216,206913,TL052069,1980-01-01,,"Dacorum, unparished area",101,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1JG,Yes,51.750548,-0.475441,505339,206861,TL053068,1980-01-01,,"Dacorum, unparished area",90,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1JH,Yes,51.748547,-0.476465,505273,206637,TL052066,1980-01-01,,"Dacorum, unparished area",95,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1JJ,Yes,51.748067,-0.477582,505197,206582,TL051065,1983-03-01,,"Dacorum, unparished area",100,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1JL,Yes,51.746559,-0.477777,505187,206414,TL051064,1983-03-01,,"Dacorum, unparished area",96,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1JN,Yes,51.747483,-0.477601,505197,206517,TL051065,1980-01-01,,"Dacorum, unparished area",98,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1JP,Yes,51.745841,-0.475788,505326,206337,TL053063,1980-01-01,,"Dacorum, unparished area",91,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1JQ,Yes,51.748986,-0.475653,505328,206687,TL053066,1980-01-01,,"Dacorum, unparished area",91,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1JR,Yes,51.744768,-0.476302,505293,206217,TL052062,1980-01-01,,"Dacorum, unparished area",91,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1JS,Yes,51.746488,-0.476462,505278,206408,TL052064,1980-01-01,,"Dacorum, unparished area",92,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1JT,Yes,51.747931,-0.476761,505254,206568,TL052065,1980-01-01,,"Dacorum, unparished area",96,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1JW,Yes,51.747611,-0.475685,505329,206534,TL053065,1980-01-01,,"Dacorum, unparished area",91,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035564,Dacorum 015D
HP1 1JY,Yes,51.744540,-0.478816,505120,206188,TL051061,2001-06-01,,"Dacorum, unparished area",90,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1JZ,Yes,51.752508,-0.477519,505191,207076,TL051070,2021-05-01,,"Dacorum, unparished area",88,England,2025-07-23,Imputed by ONS by reference to surrounding postcode grid references,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1LP,No,51.750502,-0.482309,504866,206846,TL048068,1997-06-01,1997-12-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1LU,No,51.750439,-0.482283,504867,206839,TL048068,1980-01-01,1998-06-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1LY,Yes,51.747034,-0.486728,504568,206454,TL045064,1996-12-01,,"Dacorum, unparished area",99,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1NA,Yes,51.744958,-0.490969,504280,206217,TL042062,1980-01-01,,"Dacorum, unparished area",87,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1NB,Yes,51.745792,-0.491492,504242,206309,TL042063,1980-01-01,,"Dacorum, unparished area",91,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1ND,Yes,51.746279,-0.490954,504278,206364,TL042063,1980-01-01,,"Dacorum, unparished area",95,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1NE,Yes,51.744949,-0.491679,504231,206215,TL042062,1980-01-01,,"Dacorum, unparished area",87,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1NF,Yes,51.746254,-0.491766,504222,206360,TL042063,1980-01-01,,"Dacorum, unparished area",95,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1NG,Yes,51.745932,-0.492602,504166,206323,TL041063,1980-01-01,,"Dacorum, unparished area",93,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1NH,Yes,51.745196,-0.494148,504060,206239,TL040062,1980-01-01,,"Dacorum, unparished area",89,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1NJ,Yes,51.745886,-0.494675,504022,206315,TL040063,1980-01-01,,"Dacorum, unparished area",92,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1NN,No,51.743911,-0.490700,504301,206101,TL043061,1995-12-01,1996-12-01,"Dacorum, unparished area",86,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1NP,Yes,51.745811,-0.481163,504955,206326,TL049063,1980-01-01,,"Dacorum, unparished area",91,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1NQ,Yes,51.745371,-0.492360,504183,206261,TL041062,1980-01-01,,"Dacorum, unparished area",90,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1NR,Yes,51.746064,-0.483994,504759,206350,TL047063,1980-01-01,,"Dacorum, unparished area",91,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1NS,Yes,51.746878,-0.485053,504684,206439,TL046064,1980-01-01,,"Dacorum, unparished area",98,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1NT,Yes,51.747314,-0.485386,504660,206487,TL046064,1980-01-01,,"Dacorum, unparished area",100,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1NU,Yes,51.747800,-0.484718,504705,206542,TL047065,1980-01-01,,"Dacorum, unparished area",101,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1NW,Yes,51.744808,-0.490496,504313,206201,TL043062,1985-04-01,,"Dacorum, unparished area",87,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1NX,Yes,51.747594,-0.483435,504795,206521,TL047065,1980-01-01,,"Dacorum, unparished area",95,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1NY,Yes,51.748433,-0.482929,504827,206615,TL048066,1980-01-01,,"Dacorum, unparished area",96,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1NZ,Yes,51.749166,-0.482601,504848,206697,TL048066,1980-01-01,,"Dacorum, unparished area",101,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1PA,Yes,51.749625,-0.484019,504749,206746,TL047067,1980-01-01,,"Dacorum, unparished area",105,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1PB,Yes,51.748101,-0.484418,504725,206576,TL047065,1980-01-01,,"Dacorum, unparished area",101,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1PD,Yes,51.748505,-0.485694,504636,206619,TL046066,1980-01-01,,"Dacorum, unparished area",106,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1PE,Yes,51.747422,-0.487526,504512,206496,TL045064,1980-01-01,,"Dacorum, unparished area",101,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1PF,Yes,51.749087,-0.486964,504547,206682,TL045066,1980-01-01,,"Dacorum, unparished area",110,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1PG,Yes,51.749158,-0.486150,504603,206691,TL046066,1980-01-01,,"Dacorum, unparished area",110,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1PH,Yes,51.751108,-0.483289,504796,206912,TL047069,1980-01-01,,"Dacorum, unparished area",103,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1PJ,Yes,51.751285,-0.482341,504861,206933,TL048069,1980-01-01,,"Dacorum, unparished area",108,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1PL,Yes,51.749916,-0.482155,504877,206781,TL048067,1980-01-01,,"Dacorum, unparished area",103,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1PN,Yes,51.746323,-0.481088,504959,206383,TL049063,1980-01-01,,"Dacorum, unparished area",92,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1PP,Yes,51.747356,-0.481705,504914,206497,TL049064,1980-01-01,,"Dacorum, unparished area",94,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1PQ,Yes,51.749119,-0.485253,504665,206688,TL046066,1980-01-01,,"Dacorum, unparished area",108,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1PR,Yes,51.746410,-0.483620,504784,206389,TL047063,1980-01-01,,"Dacorum, unparished area",92,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1PS,No,51.749625,-0.484019,504749,206746,TL047067,1995-12-01,1997-06-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1PT,No,51.749625,-0.484019,504749,206746,TL047067,1993-01-01,2000-10-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1PW,Yes,51.746286,-0.482393,504869,206377,TL048063,1980-01-01,,"Dacorum, unparished area",91,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1PX,Yes,51.745540,-0.486633,504578,206288,TL045062,1980-01-01,,"Dacorum, unparished area",90,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1PY,Yes,51.745710,-0.488655,504438,206304,TL044063,1980-01-01,,"Dacorum, unparished area",92,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1PZ,Yes,51.745838,-0.490215,504331,206316,TL043063,1980-01-01,,"Dacorum, unparished area",92,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1QA,Yes,51.745115,-0.485749,504640,206242,TL046062,1980-01-01,,"Dacorum, unparished area",87,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1QB,Yes,51.744808,-0.486324,504601,206207,TL046062,1980-01-01,,"Dacorum, unparished area",85,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1QD,Yes,51.745006,-0.488433,504455,206226,TL044062,1980-01-01,,"Dacorum, unparished area",89,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1QE,Yes,51.745206,-0.490034,504344,206246,TL043062,1980-01-01,,"Dacorum, unparished area",89,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1QF,Yes,51.746059,-0.486413,504592,206346,TL045063,1980-01-01,,"Dacorum, unparished area",93,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1QG,Yes,51.746431,-0.489471,504381,206383,TL043063,1980-01-01,,"Dacorum, unparished area",96,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1QH,Yes,51.746789,-0.489300,504391,206423,TL043064,1980-01-01,,"Dacorum, unparished area",98,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1QJ,Yes,51.748637,-0.488282,504457,206630,TL044066,1980-01-01,,"Dacorum, unparished area",109,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1QL,Yes,51.746843,-0.488661,504435,206430,TL044064,1980-01-01,,"Dacorum, unparished area",98,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1QN,Yes,51.747774,-0.488340,504455,206534,TL044065,1980-01-01,,"Dacorum, unparished area",104,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1QP,Yes,51.749148,-0.492379,504174,206681,TL041066,1980-01-01,,"Dacorum, unparished area",110,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1QQ,Yes,51.746308,-0.487592,504510,206372,TL045063,1980-01-01,,"Dacorum, unparished area",94,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1QR,Yes,51.749632,-0.491523,504231,206736,TL042067,1980-01-01,,"Dacorum, unparished area",113,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1QS,Yes,51.750983,-0.493101,504119,206884,TL041068,1980-01-01,,"Dacorum, unparished area",118,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1QT,Yes,51.748153,-0.490544,504302,206573,TL043065,1980-01-01,,"Dacorum, unparished area",106,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1QU,Yes,51.748169,-0.489631,504365,206576,TL043065,1980-01-01,,"Dacorum, unparished area",106,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1QW,Yes,51.747486,-0.491073,504267,206498,TL042064,1980-01-01,,"Dacorum, unparished area",103,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1QX,Yes,51.748703,-0.489946,504342,206635,TL043066,1980-01-01,,"Dacorum, unparished area",109,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1QY,Yes,51.747399,-0.489932,504346,206490,TL043064,1980-01-01,,"Dacorum, unparished area",101,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1QZ,Yes,51.744464,-0.488914,504423,206165,TL044061,1980-01-01,,"Dacorum, unparished area",86,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1RA,Yes,51.746748,-0.491054,504270,206416,TL042064,1987-04-01,,"Dacorum, unparished area",98,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1RB,Yes,51.744581,-0.487578,504515,206180,TL045061,1980-01-01,,"Dacorum, unparished area",85,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1RD,Yes,51.750810,-0.483893,504755,206878,TL047068,1980-01-01,,"Dacorum, unparished area",106,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1RF,Yes,51.746095,-0.487136,504542,206349,TL045063,1980-01-01,,"Dacorum, unparished area",94,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1RG,Yes,51.750909,-0.484556,504709,206888,TL047068,1980-01-01,,"Dacorum, unparished area",111,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1RH,Yes,51.750560,-0.486089,504604,206847,TL046068,1980-01-01,,"Dacorum, unparished area",116,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1RJ,Yes,51.750572,-0.489840,504345,206843,TL043068,1980-01-01,,"Dacorum, unparished area",120,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1RL,Yes,51.751903,-0.486333,504585,206996,TL045069,1980-01-01,,"Dacorum, unparished area",120,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1RN,Yes,51.752036,-0.487618,504495,207009,TL044070,1980-01-01,,"Dacorum, unparished area",126,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1RP,Yes,51.754526,-0.488231,504447,207285,TL044072,1980-01-01,,"Dacorum, unparished area",129,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1RQ,Yes,51.750158,-0.484871,504689,206804,TL046068,1980-01-01,,"Dacorum, unparished area",113,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1RR,Yes,51.753913,-0.488802,504409,207216,TL044072,1980-01-01,,"Dacorum, unparished area",131,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1RS,Yes,51.752841,-0.489373,504373,207096,TL043070,1980-01-01,,"Dacorum, unparished area",130,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1RT,Yes,51.751772,-0.492278,504174,206973,TL041069,1980-01-01,,"Dacorum, unparished area",123,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1RU,Yes,51.755560,-0.491036,504251,207396,TL042073,1980-01-01,,"Dacorum, unparished area",137,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023429,Dacorum 011D,E01023429,Dacorum 011D
HP1 1RW,Yes,51.753686,-0.488679,504418,207191,TL044071,1980-01-01,,"Dacorum, unparished area",130,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1RX,Yes,51.755301,-0.490494,504289,207368,TL042073,1980-01-01,,"Dacorum, unparished area",135,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023429,Dacorum 011D,E01023429,Dacorum 011D
HP1 1RY,Yes,51.755997,-0.490079,504317,207446,TL043074,1980-01-01,,"Dacorum, unparished area",137,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023429,Dacorum 011D,E01023429,Dacorum 011D
HP1 1RZ,Yes,51.755356,-0.489869,504332,207375,TL043073,1980-01-01,,"Dacorum, unparished area",134,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023429,Dacorum 011D,E01023429,Dacorum 011D
HP1 1SA,Yes,51.754171,-0.489995,504327,207243,TL043072,1980-01-01,,"Dacorum, unparished area",133,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1SB,Yes,51.752078,-0.490833,504273,207009,TL042070,1980-01-01,,"Dacorum, unparished area",128,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1SD,Yes,51.753252,-0.491272,504240,207139,TL042071,1980-01-01,,"Dacorum, unparished area",132,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1SE,Yes,51.752728,-0.491797,504205,207080,TL042070,1980-01-01,,"Dacorum, unparished area",130,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1SF,Yes,51.752446,-0.491516,504225,207049,TL042070,1980-01-01,,"Dacorum, unparished area",130,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1SG,Yes,51.751813,-0.489857,504341,206981,TL043069,1980-01-01,,"Dacorum, unparished area",126,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1SN,Yes,51.750095,-0.489769,504351,206790,TL043067,1993-08-01,,"Dacorum, unparished area",117,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1SP,Yes,51.756787,-0.477433,505187,207552,TL051075,1980-01-01,,"Dacorum, unparished area",101,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023400,Dacorum 015E,E01023400,Dacorum 015E
HP1 1SQ,Yes,51.753438,-0.486137,504594,207167,TL045071,1981-06-01,,"Dacorum, unparished area",118,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1SR,Yes,51.756628,-0.479670,505033,207531,TL050075,1980-01-01,,"Dacorum, unparished area",116,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1SS,Yes,51.757380,-0.478065,505143,207617,TL051076,1980-01-01,,"Dacorum, unparished area",106,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023400,Dacorum 015E,E01023400,Dacorum 015E
HP1 1ST,Yes,51.755104,-0.477939,505156,207364,TL051073,1980-01-01,,"Dacorum, unparished area",106,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1SU,Yes,51.755990,-0.477648,505175,207463,TL051074,1980-01-01,,"Dacorum, unparished area",103,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1SW,Yes,51.747780,-0.481112,504954,206545,TL049065,1980-01-01,,"Dacorum, unparished area",98,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1SX,Yes,51.756005,-0.482951,504808,207457,TL048074,1980-01-01,,"Dacorum, unparished area",127,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1SY,Yes,51.756252,-0.477045,505216,207493,TL052074,1990-02-01,,"Dacorum, unparished area",98,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023400,Dacorum 015E,E01023400,Dacorum 015E
HP1 1SZ,Yes,51.754536,-0.484159,504728,207292,TL047072,1980-01-01,,"Dacorum, unparished area",117,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1TA,Yes,51.755708,-0.485018,504666,207421,TL046074,1980-01-01,,"Dacorum, unparished area",121,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1TB,Yes,51.752970,-0.484052,504739,207118,TL047071,1980-01-01,,"Dacorum, unparished area",112,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1TD,Yes,51.752207,-0.483411,504785,207034,TL047070,1980-01-01,,"Dacorum, unparished area",105,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1TE,Yes,51.753761,-0.483272,504791,207207,TL047072,1980-01-01,,"Dacorum, unparished area",118,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1TF,Yes,51.752035,-0.484011,504744,207014,TL047070,1980-01-01,,"Dacorum, unparished area",108,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1TG,Yes,51.753897,-0.484789,504686,207220,TL046072,1980-01-01,,"Dacorum, unparished area",110,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1TH,Yes,51.755457,-0.482332,504852,207397,TL048073,1980-01-01,,"Dacorum, unparished area",124,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1TJ,Yes,51.752624,-0.481586,504911,207083,TL049070,1980-01-01,,"Dacorum, unparished area",116,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1TL,Yes,51.753920,-0.481717,504898,207227,TL048072,1980-01-01,,"Dacorum, unparished area",122,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1TN,Yes,51.755075,-0.483402,504779,207353,TL047073,1980-01-01,,"Dacorum, unparished area",123,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1TP,Yes,51.752037,-0.482113,504875,207017,TL048070,1980-01-01,,"Dacorum, unparished area",111,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1TQ,Yes,51.756744,-0.481723,504892,207541,TL048075,1980-01-01,,"Dacorum, unparished area",124,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1TR,Yes,51.751682,-0.481038,504951,206979,TL049069,1980-01-01,,"Dacorum, unparished area",114,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1TS,Yes,51.751571,-0.478058,505156,206971,TL051069,1980-01-01,,"Dacorum, unparished area",108,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1TT,Yes,51.750128,-0.478425,505134,206810,TL051068,1980-01-01,,"Dacorum, unparished area",107,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1TU,Yes,51.750175,-0.479293,505074,206814,TL050068,1980-01-01,,"Dacorum, unparished area",111,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1TW,Yes,51.752928,-0.482851,504822,207115,TL048071,1980-01-01,,"Dacorum, unparished area",113,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1TX,Yes,51.749234,-0.478817,505109,206710,TL051067,1980-01-01,,"Dacorum, unparished area",108,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1TY,Yes,51.749209,-0.480339,505004,206705,TL050067,1980-01-01,,"Dacorum, unparished area",107,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1TZ,Yes,51.749707,-0.480612,504984,206760,TL049067,1980-01-01,,"Dacorum, unparished area",108,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1UA,Yes,51.750612,-0.481726,504905,206859,TL049068,1980-01-01,,"Dacorum, unparished area",108,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1UB,Yes,51.750078,-0.481483,504924,206800,TL049067,1980-01-01,,"Dacorum, unparished area",106,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1UE,Yes,51.746269,-0.485986,504621,206370,TL046063,1991-09-01,,"Dacorum, unparished area",95,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1UF,Yes,51.752799,-0.475655,505319,207111,TL053071,1991-09-01,,"Dacorum, unparished area",92,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023400,Dacorum 015E,E01023400,Dacorum 015E
HP1 1UL,Yes,51.751305,-0.481804,504899,206936,TL048069,1993-01-01,,"Dacorum, unparished area",110,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1UN,No,51.750638,-0.481725,504906,206862,TL049068,1995-07-01,1997-07-01,"Dacorum, unparished area",108,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1UP,No,51.750439,-0.482283,504867,206839,TL048068,1991-09-01,1998-06-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1UR,No,51.750502,-0.482309,504866,206846,TL048068,1991-09-01,2000-06-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1US,Yes,51.745635,-0.480720,504986,206307,TL049063,1995-07-01,,"Dacorum, unparished area",91,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1UT,No,51.757225,-0.477215,505202,207601,TL052076,1994-12-01,1995-12-01,"Dacorum, unparished area",98,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023400,Dacorum 015E,E01023400,Dacorum 015E
HP1 1UW,No,51.750638,-0.481725,504906,206862,TL049068,1995-12-01,1997-06-01,"Dacorum, unparished area",108,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1UX,No,51.750502,-0.482309,504866,206846,TL048068,1991-01-01,1997-12-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1UY,Yes,51.747935,-0.492434,504172,206546,TL041065,2023-02-01,,"Dacorum, unparished area",102,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1UZ,No,51.750439,-0.482283,504867,206839,TL048068,1997-06-01,1999-06-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1WA,No,51.745653,-0.480719,504986,206309,TL049063,2000-12-01,2001-02-01,"Dacorum, unparished area",91,England,2025-07-23,Imputed by ONS by reference to surrounding postcode grid references,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1XA,Yes,51.753572,-0.476310,505272,207196,TL052071,1980-01-01,,"Dacorum, unparished area",96,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023400,Dacorum 015E,E01023400,Dacorum 015E
HP1 1XB,Yes,51.751249,-0.487225,504524,206922,TL045069,1981-06-01,,"Dacorum, unparished area",122,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1XD,Yes,51.752624,-0.485049,504671,207078,TL046070,1983-07-01,,"Dacorum, unparished area",111,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 1XF,Yes,51.749821,-0.488793,504419,206761,TL044067,2022-09-01,,"Dacorum, unparished area",88,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023381,Dacorum 018E,E01023381,Dacorum 018E
HP1 1XG,Yes,51.747332,-0.486095,504611,206488,TL046064,1994-12-01,,"Dacorum, unparished area",101,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1XH,Yes,51.753104,-0.476268,505276,207144,TL052071,2004-05-01,,"Dacorum, unparished area",96,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023398,Dacorum 015D,E01035562,Dacorum 015D
HP1 1XL,No,51.750439,-0.482283,504867,206839,TL048068,1997-06-01,1998-12-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1XP,Yes,51.756766,-0.476449,505255,207551,TL052075,1990-02-01,,"Dacorum, unparished area",94,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023400,Dacorum 015E,E01023400,Dacorum 015E
HP1 1XQ,Yes,51.746812,-0.486214,504604,206430,TL046064,1994-12-01,,"Dacorum, unparished area",98,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 1XS,Yes,51.749876,-0.486068,504607,206771,TL046067,1990-02-01,,"Dacorum, unparished area",114,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1XT,No,51.750502,-0.482309,504866,206846,TL048068,1995-07-01,1997-12-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1XX,No,51.750502,-0.482309,504866,206846,TL048068,1997-06-01,1998-06-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1XZ,No,51.750439,-0.482283,504867,206839,TL048068,1995-01-01,1998-12-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1YE,No,51.750439,-0.482283,504867,206839,TL048068,1995-07-01,1998-12-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 1YZ,No,51.750502,-0.482309,504866,206846,TL048068,1996-12-01,1997-12-01,"Dacorum, unparished area",105,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP1 2AA,Yes,51.752916,-0.493094,504115,207099,TL041070,1980-01-01,,"Dacorum, unparished area",129,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023429,Dacorum 011D,E01023429,Dacorum 011D
HP1 2AB,Yes,51.754768,-0.491642,504211,207307,TL042073,1980-01-01,,"Dacorum, unparished area",136,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023429,Dacorum 011D,E01023429,Dacorum 011D
HP1 2AD,Yes,51.755801,-0.491578,504213,207422,TL042074,1997-12-01,,"Dacorum, unparished area",139,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023429,Dacorum 011D,E01023429,Dacorum 011D
HP1 2AE,Yes,51.746152,-0.493653,504092,206346,TL040063,1980-01-01,,"Dacorum, unparished area",94,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 2AF,Yes,51.746579,-0.493957,504070,206393,TL040063,1980-01-01,,"Dacorum, unparished area",96,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023384,Dacorum 016B,E01023384,Dacorum 016B
HP1 2AG,Yes,51.747585,-0.495981,503928,206502,TL039065,1980-01-01,,"Dacorum, unparished area",95,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023384,Dacorum 016B,E01023384,Dacorum 016B
HP1 2AH,Yes,51.748461,-0.495618,503951,206600,TL039065,1980-01-01,,"Dacorum, unparished area",100,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023384,Dacorum 016B,E01023384,Dacorum 016B
HP1 2AJ,Yes,51.749114,-0.495365,503967,206673,TL039066,1980-01-01,,"Dacorum, unparished area",104,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023384,Dacorum 016B,E01023384,Dacorum 016B
HP1 2AL,Yes,51.748972,-0.496166,503912,206656,TL039066,1980-01-01,,"Dacorum, unparished area",101,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023384,Dacorum 016B,E01023384,Dacorum 016B
HP1 2AQ,Yes,51.747763,-0.495192,503983,206523,TL039065,1980-01-01,,"Dacorum, unparished area",97,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023384,Dacorum 016B,E01023384,Dacorum 016B
HP1 2AS,Yes,51.750099,-0.494984,503992,206783,TL039067,1980-01-01,,"Dacorum, unparished area",109,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023384,Dacorum 016B,E01023384,Dacorum 016B
HP1 2AT,Yes,51.749843,-0.493993,504060,206756,TL040067,1980-01-01,,"Dacorum, unparished area",111,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023384,Dacorum 016B,E01023384,Dacorum 016B
HP1 2AU,Yes,51.751635,-0.494151,504045,206955,TL040069,1980-01-01,,"Dacorum, unparished area",120,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023385,Dacorum 016C,E01023385,Dacorum 016C
HP1 2BE,Yes,51.751276,-0.495670,503941,206913,TL039069,1980-01-01,,"Dacorum, unparished area",114,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023384,Dacorum 016B,E01023384,Dacorum 016B
HP1 2BN,Yes,51.744786,-0.495856,503943,206191,TL039061,1980-01-01,,"Dacorum, unparished area",88,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023379,Dacorum 018C,E01023379,Dacorum 018C
HP1 3DN,Yes,51.756647,-0.483248,504786,207528,TL047075,1980-01-01,,"Dacorum, unparished area",129,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023380,Dacorum 018D,E01023380,Dacorum 018D
HP1 3QE,Yes,51.756147,-0.489785,504336,207463,TL043074,1980-01-01,,"Dacorum, unparished area",136,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023429,Dacorum 011D,E01023429,Dacorum 011D
HP2 4SZ,No,51.747376,-0.480444,505001,206501,TL050065,1980-01-01,1994-05-01,"Dacorum, unparished area",100,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023382,Dacorum 018F,E01023382,Dacorum 018F
HP3 0RH,No,51.744279,-0.482924,504837,206153,TL048061,1994-12-01,1997-06-01,"Dacorum, unparished area",85,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023382,Dacorum 018F,E01023382,Dacorum 018F