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 1AE,Yes,51.757392,-0.476196,505271,207621,TL052076,2003-11-01,,"Dacorum, unparished area",92,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 1SH,Yes,51.757924,-0.477018,505213,207679,TL052076,1980-01-01,,"Dacorum, unparished area",98,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 1SJ,Yes,51.757861,-0.477006,505214,207672,TL052076,1980-01-01,,"Dacorum, unparished area",97,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 1SL,Yes,51.757670,-0.476128,505276,207652,TL052076,1980-01-01,,"Dacorum, unparished area",92,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 1UJ,No,51.757391,-0.476123,505277,207621,TL052076,1980-01-01,1999-12-01,"Dacorum, unparished area",92,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3AD,Yes,51.764371,-0.490249,504286,208377,TL042083,2015-06-01,,"Dacorum, unparished area",141,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3DJ,No,51.764160,-0.490618,504261,208353,TL042083,1996-06-01,1999-12-01,"Dacorum, unparished area",142,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3DL,Yes,51.770783,-0.481904,504847,209102,TL048091,1985-10-01,,"Dacorum, unparished area",91,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3DP,Yes,51.757531,-0.476539,505247,207636,TL052076,1991-09-01,,"Dacorum, unparished area",94,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3DS,Yes,51.757243,-0.482040,504868,207596,TL048075,1980-01-01,,"Dacorum, unparished area",125,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3DT,Yes,51.758111,-0.482445,504839,207692,TL048076,1980-01-01,,"Dacorum, unparished area",127,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3DU,Yes,51.759411,-0.484908,504666,207833,TL046078,1980-01-01,,"Dacorum, unparished area",133,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3DW,Yes,51.757589,-0.483115,504793,207633,TL047076,1980-01-01,,"Dacorum, unparished area",129,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3DX,Yes,51.760091,-0.486074,504583,207907,TL045079,1980-01-01,,"Dacorum, unparished area",135,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3DY,Yes,51.760408,-0.487614,504476,207940,TL044079,1980-01-01,,"Dacorum, unparished area",134,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3DZ,Yes,51.760737,-0.487327,504496,207977,TL044079,1980-01-01,,"Dacorum, unparished area",135,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3EA,Yes,51.759288,-0.483087,504791,207822,TL047078,1980-01-01,,"Dacorum, unparished area",128,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3EB,Yes,51.759787,-0.484084,504722,207876,TL047078,1980-01-01,,"Dacorum, unparished area",132,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3ED,Yes,51.759511,-0.486383,504563,207842,TL045078,1980-01-01,,"Dacorum, unparished area",133,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3EE,Yes,51.759745,-0.487143,504511,207867,TL045078,1980-01-01,,"Dacorum, unparished area",133,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3EF,Yes,51.760636,-0.488548,504411,207964,TL044079,1980-01-01,,"Dacorum, unparished area",133,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3EG,Yes,51.759922,-0.484819,504670,207890,TL046078,1980-01-01,,"Dacorum, unparished area",133,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3EH,Yes,51.761916,-0.486694,504536,208109,TL045081,1993-08-01,,"Dacorum, unparished area",135,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3EL,No,51.764160,-0.490618,504261,208353,TL042083,1995-07-01,1999-12-01,"Dacorum, unparished area",142,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3EN,Yes,51.761101,-0.488373,504422,208016,TL044080,1980-01-01,,"Dacorum, unparished area",136,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3EP,Yes,51.763622,-0.487912,504448,208297,TL044082,1980-01-01,,"Dacorum, unparished area",138,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3EQ,No,51.760053,-0.487263,504502,207901,TL045079,1990-02-01,1994-05-01,"Dacorum, unparished area",134,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3ER,Yes,51.764433,-0.488769,504387,208386,TL043083,1980-01-01,,"Dacorum, unparished area",138,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3ES,Yes,51.762992,-0.487165,504501,208228,TL045082,1980-01-01,,"Dacorum, unparished area",136,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3ET,Yes,51.762406,-0.487054,504511,208163,TL045081,1980-01-01,,"Dacorum, unparished area",136,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3EU,Yes,51.762935,-0.485558,504613,208224,TL046082,1980-01-01,,"Dacorum, unparished area",131,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3EW,Yes,51.762216,-0.487669,504469,208141,TL044081,1980-01-01,,"Dacorum, unparished area",139,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3EX,Yes,51.764033,-0.486319,504557,208345,TL045083,1980-01-01,,"Dacorum, unparished area",134,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3EY,Yes,51.764169,-0.485691,504601,208361,TL046083,1980-01-01,,"Dacorum, unparished area",131,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3EZ,Yes,51.761944,-0.486084,504579,208113,TL045081,1980-01-01,,"Dacorum, unparished area",133,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3FB,Yes,51.764686,-0.486036,504575,208418,TL045084,2021-10-01,,"Dacorum, unparished area",129,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3FD,Yes,51.767855,-0.484988,504640,208772,TL046087,2023-03-01,,"Dacorum, unparished area",129,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3HA,Yes,51.763413,-0.484963,504652,208278,TL046082,1980-01-01,,"Dacorum, unparished area",129,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3HB,Yes,51.763761,-0.484053,504714,208318,TL047083,1980-01-01,,"Dacorum, unparished area",124,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3HD,Yes,51.764055,-0.483144,504777,208352,TL047083,1980-01-01,,"Dacorum, unparished area",119,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3HE,Yes,51.762987,-0.484687,504673,208231,TL046082,1980-01-01,,"Dacorum, unparished area",127,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3HF,Yes,51.762334,-0.484941,504656,208158,TL046081,1980-01-01,,"Dacorum, unparished area",128,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3HG,No,51.763390,-0.481790,504872,208280,TL048082,1980-01-01,2006-11-01,"Dacorum, unparished area",112,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3HH,Yes,51.761228,-0.482877,504801,208038,TL048080,1990-07-01,,"Dacorum, unparished area",124,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3HJ,Yes,51.760599,-0.482927,504799,207968,TL047079,1990-07-01,,"Dacorum, unparished area",127,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3HL,No,51.761832,-0.485755,504601,208101,TL046081,1993-01-01,1995-07-01,"Dacorum, unparished area",132,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3HP,Yes,51.763617,-0.482666,504811,208304,TL048083,1980-01-01,,"Dacorum, unparished area",117,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3HQ,No,51.761794,-0.482858,504801,208101,TL048081,1983-07-01,1994-12-01,"Dacorum, unparished area",121,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3HR,Yes,51.764227,-0.481834,504867,208373,TL048083,1980-01-01,,"Dacorum, unparished area",113,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3HS,Yes,51.764797,-0.482119,504846,208436,TL048084,1980-01-01,,"Dacorum, unparished area",114,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3HT,Yes,51.764925,-0.482985,504785,208449,TL047084,1980-01-01,,"Dacorum, unparished area",116,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3HU,Yes,51.764504,-0.483796,504730,208401,TL047084,1980-01-01,,"Dacorum, unparished area",121,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3HW,Yes,51.763066,-0.483859,504729,208241,TL047082,1980-01-01,,"Dacorum, unparished area",123,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3HX,Yes,51.765291,-0.484871,504654,208487,TL046084,1980-01-01,,"Dacorum, unparished area",125,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3HY,Yes,51.762615,-0.483019,504788,208192,TL047081,1995-07-01,,"Dacorum, unparished area",119,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3HZ,Yes,51.762025,-0.481242,504912,208129,TL049081,1995-07-01,,"Dacorum, unparished area",113,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3JA,Yes,51.764398,-0.484683,504670,208388,TL046083,1980-01-01,,"Dacorum, unparished area",126,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3JB,Yes,51.765013,-0.487025,504506,208453,TL045084,1980-01-01,,"Dacorum, unparished area",132,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3JD,Yes,51.763968,-0.486857,504521,208337,TL045083,1980-01-01,,"Dacorum, unparished area",135,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3JE,Yes,51.764278,-0.487876,504449,208370,TL044083,1980-01-01,,"Dacorum, unparished area",137,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3JF,No,51.763666,-0.488592,504401,208301,TL044083,1994-12-01,1996-06-01,"Dacorum, unparished area",139,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3JG,Yes,51.763326,-0.481691,504878,208273,TL048082,2006-10-01,,"Dacorum, unparished area",111,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3JH,Yes,51.761232,-0.489455,504348,208029,TL043080,1980-01-01,,"Dacorum, unparished area",135,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3JL,Yes,51.761863,-0.488855,504387,208100,TL043080,1980-01-01,,"Dacorum, unparished area",138,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3JN,Yes,51.762706,-0.488711,504395,208194,TL043081,1980-01-01,,"Dacorum, unparished area",139,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3JP,Yes,51.761705,-0.482223,504846,208092,TL048080,1995-07-01,,"Dacorum, unparished area",119,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3JQ,Yes,51.762980,-0.490411,504278,208222,TL042082,1992-01-01,,"Dacorum, unparished area",140,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3JR,Yes,51.761304,-0.481816,504875,208048,TL048080,1995-07-01,,"Dacorum, unparished area",118,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3JS,Yes,51.762366,-0.490244,504290,208154,TL042081,1980-01-01,,"Dacorum, unparished area",139,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3JT,Yes,51.762049,-0.490776,504254,208118,TL042081,1980-01-01,,"Dacorum, unparished area",136,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3JU,Yes,51.762917,-0.491182,504224,208214,TL042082,1980-01-01,,"Dacorum, unparished area",139,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3JW,Yes,51.761613,-0.489747,504326,208071,TL043080,1980-01-01,,"Dacorum, unparished area",136,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3JX,Yes,51.764370,-0.489438,504341,208378,TL043083,1980-01-01,,"Dacorum, unparished area",139,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3JY,Yes,51.763792,-0.489964,504307,208313,TL043083,1980-01-01,,"Dacorum, unparished area",141,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3JZ,Yes,51.763969,-0.491856,504176,208330,TL041083,1980-01-01,,"Dacorum, unparished area",143,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3LA,Yes,51.763649,-0.492867,504107,208293,TL041082,1980-01-01,,"Dacorum, unparished area",143,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3LB,Yes,51.764717,-0.489890,504309,208416,TL043084,1980-01-01,,"Dacorum, unparished area",140,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3LD,Yes,51.765639,-0.487468,504474,208522,TL044085,1980-01-01,,"Dacorum, unparished area",133,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3LE,Yes,51.764853,-0.488566,504401,208433,TL044084,1980-01-01,,"Dacorum, unparished area",137,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3LF,Yes,51.764725,-0.490498,504268,208416,TL042084,1980-01-01,,"Dacorum, unparished area",141,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3LG,Yes,51.765057,-0.489719,504320,208454,TL043084,1980-01-01,,"Dacorum, unparished area",139,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3LH,Yes,51.766629,-0.485406,504614,208635,TL046086,1980-01-01,,"Dacorum, unparished area",124,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3LJ,No,51.766963,-0.485554,504604,208672,TL046086,1995-07-01,1997-07-01,"Dacorum, unparished area",123,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3LL,Yes,51.767289,-0.485717,504592,208708,TL045087,1980-01-01,,"Dacorum, unparished area",124,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3LN,No,51.766326,-0.485604,504602,208601,TL046086,1991-09-01,1992-12-01,"Dacorum, unparished area",125,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3LP,Yes,51.767609,-0.484735,504659,208745,TL046087,1980-01-01,,"Dacorum, unparished area",119,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3LQ,Yes,51.766474,-0.486657,504529,208616,TL045086,1980-01-01,,"Dacorum, unparished area",128,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3LR,Yes,51.765972,-0.485384,504618,208562,TL046085,1980-01-01,,"Dacorum, unparished area",125,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3LS,No,51.763641,-0.492882,504105,208292,TL041082,1995-07-01,1997-08-01,"Dacorum, unparished area",143,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3LT,No,51.764160,-0.490618,504261,208353,TL042083,1997-06-01,2000-07-01,"Dacorum, unparished area",142,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3LW,Yes,51.766741,-0.484358,504687,208649,TL046086,1980-01-01,,"Dacorum, unparished area",121,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3LX,Yes,51.764721,-0.490918,504239,208415,TL042084,1980-01-01,,"Dacorum, unparished area",142,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3LY,Yes,51.765414,-0.491605,504190,208491,TL041084,1980-01-01,,"Dacorum, unparished area",143,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3LZ,Yes,51.766407,-0.492659,504115,208600,TL041085,1980-01-01,,"Dacorum, unparished area",142,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3NA,Yes,51.765583,-0.492875,504102,208508,TL041085,1980-01-01,,"Dacorum, unparished area",145,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3NB,Yes,51.766168,-0.493638,504048,208572,TL040085,1980-01-01,,"Dacorum, unparished area",145,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3ND,Yes,51.764143,-0.491372,504209,208350,TL042083,1980-01-01,,"Dacorum, unparished area",143,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3NE,Yes,51.764560,-0.492358,504140,208395,TL041083,1980-01-01,,"Dacorum, unparished area",144,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3NF,Yes,51.765175,-0.491903,504170,208464,TL041084,1980-01-01,,"Dacorum, unparished area",143,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3NG,Yes,51.765133,-0.492847,504104,208458,TL041084,1980-01-01,,"Dacorum, unparished area",145,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3NH,Yes,51.764022,-0.494565,503988,208332,TL039083,1980-01-01,,"Dacorum, unparished area",145,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3NJ,Yes,51.765169,-0.494976,503957,208459,TL039084,1980-01-01,,"Dacorum, unparished area",147,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3NL,Yes,51.765637,-0.494960,503958,208511,TL039085,1980-01-01,,"Dacorum, unparished area",147,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3NN,Yes,51.765019,-0.493792,504040,208444,TL040084,1980-01-01,,"Dacorum, unparished area",145,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3NP,Yes,51.766124,-0.495784,503900,208564,TL038085,1980-01-01,,"Dacorum, unparished area",147,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3NQ,Yes,51.764571,-0.493213,504081,208395,TL040083,1980-01-01,,"Dacorum, unparished area",145,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3NR,Yes,51.766753,-0.493706,504041,208637,TL040086,1980-01-01,,"Dacorum, unparished area",144,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3NS,Yes,51.767069,-0.491666,504182,208675,TL041086,1980-01-01,,"Dacorum, unparished area",138,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3NT,Yes,51.767088,-0.489651,504321,208680,TL043086,1980-01-01,,"Dacorum, unparished area",135,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3NU,Yes,51.767481,-0.490855,504237,208722,TL042087,1980-01-01,,"Dacorum, unparished area",137,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3NW,Yes,51.765745,-0.494319,504001,208524,TL040085,1980-01-01,,"Dacorum, unparished area",146,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3NX,Yes,51.765744,-0.488609,504396,208532,TL043085,1980-01-01,,"Dacorum, unparished area",135,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3NY,Yes,51.766453,-0.488542,504398,208611,TL043086,1980-01-01,,"Dacorum, unparished area",135,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3NZ,Yes,51.766583,-0.490248,504280,208623,TL042086,1980-01-01,,"Dacorum, unparished area",136,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3PA,Yes,51.766140,-0.489378,504342,208575,TL043085,1980-01-01,,"Dacorum, unparished area",136,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3PB,Yes,51.766016,-0.490180,504286,208560,TL042085,1980-01-01,,"Dacorum, unparished area",138,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3PD,Yes,51.765757,-0.490333,504277,208531,TL042085,1980-01-01,,"Dacorum, unparished area",139,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3PE,Yes,51.765616,-0.489178,504357,208517,TL043085,1980-01-01,,"Dacorum, unparished area",137,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3PF,No,51.764695,-0.498701,503702,208401,TL037084,1980-01-01,1995-12-01,"Dacorum, unparished area",150,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3PG,No,51.765501,-0.491429,504201,208501,TL042085,1990-02-01,1994-05-01,"Dacorum, unparished area",143,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3PQ,No,51.763741,-0.494386,504001,208301,TL040083,1992-08-01,1994-05-01,"Dacorum, unparished area",143,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3QA,Yes,51.764350,-0.499800,503626,208361,TL036083,1992-08-01,,"Dacorum, unparished area",149,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023428,Dacorum 011C,E01023428,Dacorum 011C
HP1 3QB,Yes,51.764283,-0.501642,503500,208351,TL034083,1992-08-01,,"Dacorum, unparished area",147,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023428,Dacorum 011C,E01023428,Dacorum 011C
HP1 3QD,Yes,51.764787,-0.500278,503592,208409,TL035084,1992-08-01,,"Dacorum, unparished area",150,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023428,Dacorum 011C,E01023428,Dacorum 011C
HP1 3RJ,Yes,51.761552,-0.494082,504027,208058,TL040080,2021-04-01,,"Dacorum, unparished area",142,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3RL,Yes,51.761504,-0.486142,504576,208064,TL045080,1993-08-01,,"Dacorum, unparished area",134,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3RN,Yes,51.761410,-0.485160,504644,208055,TL046080,1993-08-01,,"Dacorum, unparished area",131,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3RP,Yes,51.760638,-0.485969,504589,207968,TL045079,1993-08-01,,"Dacorum, unparished area",135,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3RR,Yes,51.760436,-0.484903,504664,207947,TL046079,1993-08-01,,"Dacorum, unparished area",133,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3RS,Yes,51.760127,-0.483943,504730,207914,TL047079,1993-08-01,,"Dacorum, unparished area",131,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3RT,Yes,51.761081,-0.486794,504532,208016,TL045080,1993-08-01,,"Dacorum, unparished area",136,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3RU,Yes,51.760742,-0.484922,504661,207981,TL046079,1993-08-01,,"Dacorum, unparished area",132,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3RW,Yes,51.760886,-0.484221,504710,207998,TL047079,1993-08-01,,"Dacorum, unparished area",130,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023391,Dacorum 010B,E01023391,Dacorum 010B
HP1 3SA,No,51.764753,-0.495482,503924,208412,TL039084,1995-12-01,1997-06-01,"Dacorum, unparished area",148,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3SB,No,51.764327,-0.489584,504331,208373,TL043083,1995-12-01,1998-06-01,"Dacorum, unparished area",140,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3SD,Yes,51.764753,-0.495482,503924,208412,TL039084,1997-12-01,,"Dacorum, unparished area",148,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3SE,Yes,51.764444,-0.496637,503845,208376,TL038083,1997-12-01,,"Dacorum, unparished area",148,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3SF,Yes,51.765052,-0.498486,503716,208441,TL037084,1997-12-01,,"Dacorum, unparished area",151,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3SH,No,51.768383,-0.488999,504363,208825,TL043088,1997-06-01,2000-10-01,"Dacorum, unparished area",136,England,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3SJ,Yes,51.765336,-0.498187,503736,208473,TL037084,1997-12-01,,"Dacorum, unparished area",151,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3SL,Yes,51.765400,-0.498939,503683,208479,TL036084,1997-12-01,,"Dacorum, unparished area",152,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3SR,No,51.764160,-0.490618,504261,208353,TL042083,1991-09-01,1998-12-01,"Dacorum, unparished area",142,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3TD,No,51.764327,-0.489584,504331,208373,TL043083,1995-07-01,1997-12-01,"Dacorum, unparished area",140,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3TL,No,51.764160,-0.490618,504261,208353,TL042083,1997-12-01,1999-06-01,"Dacorum, unparished area",142,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3TR,Yes,51.765485,-0.497153,503807,208491,TL038084,1999-06-01,,"Dacorum, unparished area",150,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3TS,No,51.764160,-0.490618,504261,208353,TL042083,1998-06-01,1999-06-01,"Dacorum, unparished area",142,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3TU,Yes,51.765090,-0.496543,503850,208448,TL038084,1999-06-01,,"Dacorum, unparished area",148,England,2025-07-23,Within the building of the matched address closest to the postcode mean,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3WB,No,51.765072,-0.496558,503849,208446,TL038084,2002-06-01,2003-06-01,"Dacorum, unparished area",148,England,2025-07-23,Imputed by ONS by reference to surrounding postcode grid references,E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3XD,No,51.764160,-0.490618,504261,208353,TL042083,1999-12-01,2001-01-01,"Dacorum, unparished area",142,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023392,Dacorum 011A,E01023392,Dacorum 011A
HP1 3YU,No,51.764326,-0.489569,504333,208373,TL043083,2000-06-01,2001-04-01,"Dacorum, unparished area",140,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023390,Dacorum 010A,E01023390,Dacorum 010A
HP1 3ZN,No,51.764701,-0.490006,504302,208414,TL043084,2003-06-01,2004-02-01,"Dacorum, unparished area",140,England,2025-07-23,Postcode sector mean (mainly PO Boxes),E01023390,Dacorum 010A,E01023390,Dacorum 010A