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
LL54 6AB,Yes,53.053833,-4.254559,248988,353108,SH489531,1980-01-01,,Llanllyfni,116,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AD,Yes,53.054148,-4.254599,248986,353143,SH489531,1984-02-01,,Llanllyfni,116,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AE,Yes,53.054450,-4.250950,249232,353169,SH492531,1980-01-01,,Llanllyfni,115,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AF,Yes,53.054767,-4.250408,249269,353203,SH492532,1980-01-01,,Llanllyfni,118,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AG,No,53.054974,-4.238018,250100,353200,SH501532,1980-01-01,1995-12-01,Llanllyfni,115,Wales,2025-06-18,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6AH,Yes,53.054526,-4.251753,249178,353179,SH491531,1980-01-01,,Llanllyfni,117,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AJ,Yes,53.054519,-4.253544,249058,353182,SH490531,2010-04-01,,Llanllyfni,118,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AL,Yes,53.055212,-4.252088,249158,353256,SH491532,1980-01-01,,Llanllyfni,126,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AN,Yes,53.055042,-4.251541,249194,353236,SH491532,1980-01-01,,Llanllyfni,124,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AP,Yes,53.055286,-4.254315,249009,353269,SH490532,1980-01-01,,Llanllyfni,130,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AQ,No,53.054833,-4.245472,249600,353200,SH496531,1993-01-01,1994-05-01,Llanllyfni,115,Wales,2025-06-18,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AR,Yes,53.054464,-4.253123,249086,353175,SH490531,1980-01-01,,Llanllyfni,115,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AS,Yes,53.055331,-4.253392,249071,353272,SH490532,1980-01-01,,Llanllyfni,128,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AT,Yes,53.055904,-4.252533,249131,353334,SH491533,1980-01-01,,Llanllyfni,137,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AU,Yes,53.049278,-4.250181,249265,352592,SH492525,1980-01-01,,Llanllyfni,104,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AW,Yes,53.054749,-4.252750,249112,353206,SH491532,1980-01-01,,Llanllyfni,119,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AX,Yes,53.052409,-4.256186,248874,352953,SH488529,2011-03-01,,Llanllyfni,109,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AY,Yes,53.048314,-4.249311,249320,352483,SH493524,1980-01-01,,Llanllyfni,111,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6AZ,Yes,53.046639,-4.281949,247127,352366,SH471523,2017-10-01,,Llanllyfni,115,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BA,Yes,53.050012,-4.247459,249450,352668,SH494526,1980-01-01,,Llanllyfni,108,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BB,Yes,53.048649,-4.231460,250518,352483,SH505524,1980-01-01,,Llanllyfni,115,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BD,Yes,53.057084,-4.226121,250905,353410,SH509534,1980-01-01,,Llanllyfni,111,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BE,Yes,53.057237,-4.228570,250741,353432,SH507534,1993-01-01,,Llanllyfni,111,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BG,Yes,53.055983,-4.230221,250626,353296,SH506532,2000-12-01,,Llanllyfni,108,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BH,Yes,53.056761,-4.224710,250998,353371,SH509533,1980-01-01,,Llanllyfni,110,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BL,Yes,53.057007,-4.223559,251076,353396,SH510533,1980-01-01,,Llanllyfni,112,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BN,Yes,53.057275,-4.223632,251072,353426,SH510534,1980-01-01,,Llanllyfni,116,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BP,Yes,53.057457,-4.216807,251530,353432,SH515534,1980-01-01,,Llanllyfni,109,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BS,Yes,53.060169,-4.215036,251658,353730,SH516537,1980-01-01,,Llanllyfni,144,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BT,Yes,53.053863,-4.195782,252927,352989,SH529529,1980-01-01,,Llanllyfni,162,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BU,Yes,53.056581,-4.226148,250901,353354,SH509533,1980-01-01,,Llanllyfni,107,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BW,Yes,53.056552,-4.222431,251150,353343,SH511533,1980-01-01,,Llanllyfni,109,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BY,Yes,53.053971,-4.253038,249090,353120,SH490531,1993-08-01,,Llanllyfni,112,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6DD,Yes,53.046304,-4.281686,247143,352328,SH471523,1980-01-01,,Llanllyfni,94,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6DE,Yes,53.045474,-4.280881,247194,352234,SH471522,1980-01-01,,Llanllyfni,98,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6DF,Yes,53.044437,-4.281960,247118,352121,SH471521,1980-01-01,,Llanllyfni,97,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6DG,Yes,53.039075,-4.276993,247432,351514,SH474515,1980-01-01,,Llanllyfni,132,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6DJ,Yes,53.044907,-4.282298,247097,352174,SH470521,2009-12-01,,Llanllyfni,96,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6DL,Yes,53.034543,-4.287276,246727,351032,SH467510,1980-01-01,,Llanllyfni,131,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6HA,No,53.059932,-4.264363,248352,353807,SH483538,1980-01-01,2005-11-01,Llanllyfni,208,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HF,Yes,53.052394,-4.267824,248094,352976,SH480529,1980-01-01,,Llanllyfni,113,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HG,Yes,53.052148,-4.262797,248430,352938,SH484529,1980-01-01,,Llanllyfni,114,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HH,Yes,53.052150,-4.262245,248467,352937,SH484529,1980-01-01,,Llanllyfni,117,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HL,Yes,53.052022,-4.259031,248682,352916,SH486529,1980-01-01,,Llanllyfni,113,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HN,Yes,53.052145,-4.259664,248640,352931,SH486529,1980-01-01,,Llanllyfni,116,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HP,Yes,53.053394,-4.256439,248860,353063,SH488530,1980-01-01,,Llanllyfni,117,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HR,Yes,53.054271,-4.255217,248945,353158,SH489531,1980-01-01,,Llanllyfni,120,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HS,Yes,53.054849,-4.256008,248894,353224,SH488532,1980-01-01,,Llanllyfni,137,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HT,Yes,53.053588,-4.258031,248754,353088,SH487530,1980-01-01,,Llanllyfni,126,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HU,Yes,53.053891,-4.259584,248651,353125,SH486531,1980-01-01,,Llanllyfni,138,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HW,Yes,53.052411,-4.259910,248624,352961,SH486529,1980-01-01,,Llanllyfni,120,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HY,Yes,53.052827,-4.260722,248571,353009,SH485530,1980-01-01,,Llanllyfni,128,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6LA,Yes,53.052948,-4.262415,248458,353026,SH484530,1980-01-01,,Llanllyfni,131,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6LB,Yes,53.052860,-4.262700,248439,353017,SH484530,1980-01-01,,Llanllyfni,128,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6LD,Yes,53.053383,-4.265034,248284,353080,SH482530,1980-01-01,,Llanllyfni,134,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6LE,Yes,53.055796,-4.256819,248843,353331,SH488533,1980-01-01,,Llanllyfni,152,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6LF,Yes,53.060465,-4.249571,249345,353835,SH493538,1980-01-01,,Llanllyfni,233,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6LG,Yes,53.060631,-4.248848,249394,353852,SH493538,1980-01-01,,Llanllyfni,239,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6LL,No,53.057132,-4.266484,248200,353500,SH482535,1993-08-01,1997-07-01,Llanllyfni,194,Wales,2025-06-18,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6PT,Yes,53.060302,-4.263845,248388,353847,SH483538,1980-01-01,,Llanllyfni,208,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6PY,No,53.053596,-4.270835,247896,353116,SH478531,1980-01-01,2019-09-01,Llanllyfni,133,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6RP,Yes,53.044728,-4.271950,247790,352132,SH477521,1980-01-01,,Llanllyfni,107,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6RR,Yes,53.045948,-4.257468,248765,352237,SH487522,1980-01-01,,Llanllyfni,128,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6RS,Yes,53.044407,-4.254299,248972,352059,SH489520,1980-01-01,,Llanllyfni,148,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6RT,Yes,53.039114,-4.251815,249120,351465,SH491514,1980-01-01,,Llanllyfni,236,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6RY,Yes,53.034564,-4.268865,247961,350995,SH479509,1980-01-01,,Llanllyfni,183,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SA,Yes,53.035894,-4.273574,247650,351153,SH476511,1980-01-01,,Llanllyfni,161,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SB,Yes,53.040121,-4.271678,247792,351619,SH477516,1980-01-01,,Llanllyfni,129,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SG,Yes,53.042855,-4.282891,247050,351947,SH470519,1980-01-01,,Llanllyfni,104,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SH,Yes,53.041612,-4.282967,247041,351809,SH470518,1980-01-01,,Llanllyfni,112,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SL,Yes,53.043015,-4.282489,247078,351964,SH470519,1980-01-01,,Llanllyfni,103,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SN,Yes,53.042470,-4.283273,247023,351905,SH470519,1980-01-01,,Llanllyfni,107,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SP,Yes,53.040053,-4.284130,246957,351638,SH469516,1980-01-01,,Llanllyfni,122,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SR,Yes,53.040107,-4.285520,246864,351647,SH468516,1980-01-01,,Llanllyfni,116,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SS,Yes,53.041691,-4.284993,246905,351822,SH469518,1980-01-01,,Llanllyfni,108,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6ST,Yes,53.041361,-4.294150,246290,351805,SH462518,1980-01-01,,Llanllyfni,84,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SU,Yes,53.035044,-4.289757,246562,351093,SH465510,1980-01-01,,Llanllyfni,116,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SW,Yes,53.040751,-4.283824,246980,351715,SH469517,1980-01-01,,Llanllyfni,117,Wales,2025-06-18,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6ZB,No,53.052316,-4.268216,248067,352968,SH480529,1995-12-01,1999-12-01,Llanllyfni,113,Wales,2025-06-18,Postcode sector mean (mainly PO Boxes),W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6ZD,No,53.052316,-4.268216,248067,352968,SH480529,1996-12-01,1999-06-01,Llanllyfni,113,Wales,2025-06-18,Postcode sector mean (mainly PO Boxes),W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6ZE,No,53.052316,-4.268216,248067,352968,SH480529,1997-06-01,1998-12-01,Llanllyfni,113,Wales,2025-06-18,Postcode sector mean (mainly PO Boxes),W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6ZF,No,53.052316,-4.268216,248067,352968,SH480529,1998-06-01,1999-06-01,Llanllyfni,113,Wales,2025-06-18,Postcode sector mean (mainly PO Boxes),W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6ZG,No,53.052316,-4.268216,248067,352968,SH480529,1999-06-01,2000-09-01,Llanllyfni,113,Wales,2025-06-18,Postcode sector mean (mainly PO Boxes),W01000112,Gwynedd 008D,W01000112,Gwynedd 008D