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,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AD,Yes,53.054165,-4.254606,248986,353145,SH489531,1984-02-01,,Llanllyfni,116,Wales,2025-07-23,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,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AF,Yes,53.054784,-4.250416,249269,353205,SH492532,1980-01-01,,Llanllyfni,118,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AG,No,53.054991,-4.238026,250100,353202,SH500532,1980-01-01,1995-12-01,Llanllyfni,115,Wales,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6AH,Yes,53.054543,-4.251761,249178,353181,SH491531,1980-01-01,,Llanllyfni,117,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AJ,Yes,53.054536,-4.253551,249058,353184,SH490531,2010-04-01,,Llanllyfni,118,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AL,Yes,53.055229,-4.252095,249158,353258,SH491532,1980-01-01,,Llanllyfni,126,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AN,Yes,53.055059,-4.251549,249194,353238,SH491532,1980-01-01,,Llanllyfni,124,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AP,Yes,53.055303,-4.254323,249009,353271,SH490532,1980-01-01,,Llanllyfni,130,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AQ,No,53.054850,-4.245480,249600,353202,SH495532,1993-01-01,1994-05-01,Llanllyfni,115,Wales,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AR,Yes,53.054481,-4.253131,249086,353177,SH490531,1980-01-01,,Llanllyfni,115,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AS,Yes,53.055348,-4.253400,249071,353274,SH490532,1980-01-01,,Llanllyfni,128,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AT,Yes,53.055884,-4.252622,249125,353332,SH491533,1980-01-01,,Llanllyfni,137,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AU,Yes,53.049295,-4.250189,249265,352594,SH492525,1980-01-01,,Llanllyfni,104,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AW,Yes,53.054766,-4.252758,249112,353208,SH491532,1980-01-01,,Llanllyfni,119,Wales,2025-07-23,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,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6AY,Yes,53.048331,-4.249318,249320,352485,SH493524,1980-01-01,,Llanllyfni,111,Wales,2025-07-23,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,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BA,Yes,53.050029,-4.247467,249450,352670,SH494526,1980-01-01,,Llanllyfni,108,Wales,2025-07-23,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,2025-07-23,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,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BE,Yes,53.057254,-4.228577,250741,353434,SH507534,1993-01-01,,Llanllyfni,111,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BG,Yes,53.056000,-4.230229,250626,353298,SH506532,2000-12-01,,Llanllyfni,108,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BH,Yes,53.056778,-4.224717,250998,353373,SH509533,1980-01-01,,Llanllyfni,110,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BL,Yes,53.057024,-4.223566,251076,353398,SH510533,1980-01-01,,Llanllyfni,112,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BN,Yes,53.057292,-4.223640,251072,353428,SH510534,1980-01-01,,Llanllyfni,116,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BP,Yes,53.057474,-4.216814,251530,353434,SH515534,1980-01-01,,Llanllyfni,109,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BS,Yes,53.060186,-4.215043,251658,353732,SH516537,1980-01-01,,Llanllyfni,144,Wales,2025-07-23,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,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BU,Yes,53.056598,-4.226156,250901,353356,SH509533,1980-01-01,,Llanllyfni,107,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BW,Yes,53.056569,-4.222438,251150,353345,SH511533,1980-01-01,,Llanllyfni,109,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6BY,Yes,53.053988,-4.253045,249090,353122,SH490531,1993-08-01,,Llanllyfni,112,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6DD,Yes,53.046321,-4.281694,247143,352330,SH471523,1980-01-01,,Llanllyfni,94,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6DE,Yes,53.045491,-4.280889,247194,352236,SH471522,1980-01-01,,Llanllyfni,98,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6DF,Yes,53.044454,-4.281968,247118,352123,SH471521,1980-01-01,,Llanllyfni,97,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6DG,Yes,53.039092,-4.277001,247432,351516,SH474515,1980-01-01,,Llanllyfni,132,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6DJ,Yes,53.044924,-4.282306,247097,352176,SH470521,2009-12-01,,Llanllyfni,96,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6DL,Yes,53.034776,-4.287334,246724,351058,SH467510,1980-01-01,,Llanllyfni,131,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6HA,No,53.059950,-4.264371,248352,353809,SH483538,1980-01-01,2005-11-01,Llanllyfni,208,Wales,2025-07-23,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,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HG,Yes,53.052148,-4.262798,248430,352938,SH484529,1980-01-01,,Llanllyfni,114,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HH,Yes,53.052150,-4.262246,248467,352937,SH484529,1980-01-01,,Llanllyfni,117,Wales,2025-07-23,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,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HN,Yes,53.052119,-4.259633,248642,352928,SH486529,1980-01-01,,Llanllyfni,116,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HP,Yes,53.053411,-4.256447,248860,353065,SH488530,1980-01-01,,Llanllyfni,117,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HR,Yes,53.054288,-4.255225,248945,353160,SH489531,1980-01-01,,Llanllyfni,120,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HS,Yes,53.054867,-4.256016,248894,353226,SH488532,1980-01-01,,Llanllyfni,137,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HT,Yes,53.053605,-4.258039,248754,353090,SH487530,1980-01-01,,Llanllyfni,126,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HU,Yes,53.053909,-4.259592,248651,353127,SH486531,1980-01-01,,Llanllyfni,138,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HW,Yes,53.052428,-4.259917,248624,352963,SH486529,1980-01-01,,Llanllyfni,120,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6HY,Yes,53.052844,-4.260730,248571,353011,SH485530,1980-01-01,,Llanllyfni,128,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6LA,Yes,53.052965,-4.262423,248458,353028,SH484530,1980-01-01,,Llanllyfni,131,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6LB,Yes,53.052817,-4.262624,248444,353012,SH484530,1980-01-01,,Llanllyfni,128,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6LD,Yes,53.053400,-4.265042,248284,353082,SH482530,1980-01-01,,Llanllyfni,134,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6LE,Yes,53.055813,-4.256826,248843,353333,SH488533,1980-01-01,,Llanllyfni,152,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6LF,Yes,53.060482,-4.249578,249345,353837,SH493538,1980-01-01,,Llanllyfni,233,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6LG,Yes,53.060649,-4.248856,249394,353854,SH493538,1980-01-01,,Llanllyfni,239,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6LL,No,53.057149,-4.266492,248200,353502,SH481535,1993-08-01,1997-07-01,Llanllyfni,194,Wales,2025-07-23,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6PT,Yes,53.060319,-4.263853,248388,353849,SH483538,1980-01-01,,Llanllyfni,208,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6PY,No,53.053613,-4.270843,247896,353118,SH478531,1980-01-01,2019-09-01,Llanllyfni,133,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6RP,Yes,53.044745,-4.271958,247790,352134,SH477521,1980-01-01,,Llanllyfni,107,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6RR,Yes,53.045965,-4.257475,248765,352239,SH487522,1980-01-01,,Llanllyfni,128,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6RS,Yes,53.044424,-4.254307,248972,352061,SH489520,1980-01-01,,Llanllyfni,148,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6RT,Yes,53.039131,-4.251823,249120,351467,SH491514,1980-01-01,,Llanllyfni,236,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6RY,Yes,53.034581,-4.268873,247961,350997,SH479509,1980-01-01,,Llanllyfni,183,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SA,Yes,53.035911,-4.273582,247649,351155,SH476511,1980-01-01,,Llanllyfni,161,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SB,Yes,53.040138,-4.271686,247792,351621,SH477516,1980-01-01,,Llanllyfni,129,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SG,Yes,53.042872,-4.282899,247050,351949,SH470519,1980-01-01,,Llanllyfni,104,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SH,Yes,53.041118,-4.282941,247040,351754,SH470517,1980-01-01,,Llanllyfni,112,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SL,Yes,53.042954,-4.282351,247087,351957,SH470519,1980-01-01,,Llanllyfni,103,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SN,Yes,53.042487,-4.283281,247023,351907,SH470519,1980-01-01,,Llanllyfni,107,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SP,Yes,53.040070,-4.284138,246957,351640,SH469516,1980-01-01,,Llanllyfni,122,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SR,Yes,53.040124,-4.285528,246864,351649,SH468516,1980-01-01,,Llanllyfni,116,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SS,Yes,53.041708,-4.285001,246904,351824,SH469518,1980-01-01,,Llanllyfni,108,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6ST,Yes,53.041379,-4.294158,246290,351807,SH462518,1980-01-01,,Llanllyfni,84,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SU,Yes,53.035062,-4.289765,246562,351095,SH465510,1980-01-01,,Llanllyfni,116,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6SW,Yes,53.040768,-4.283832,246980,351717,SH469517,1980-01-01,,Llanllyfni,117,Wales,2025-07-23,Within the building of the matched address closest to the postcode mean,W01000086,Gwynedd 008B,W01000086,Gwynedd 008B
LL54 6ZB,No,53.052333,-4.268224,248067,352970,SH480529,1995-12-01,1999-12-01,Llanllyfni,113,Wales,2025-07-23,Postcode sector mean (mainly PO Boxes),W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6ZD,No,53.052333,-4.268224,248067,352970,SH480529,1996-12-01,1999-06-01,Llanllyfni,113,Wales,2025-07-23,Postcode sector mean (mainly PO Boxes),W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6ZE,No,53.052333,-4.268224,248067,352970,SH480529,1997-06-01,1998-12-01,Llanllyfni,113,Wales,2025-07-23,Postcode sector mean (mainly PO Boxes),W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6ZF,No,53.052333,-4.268224,248067,352970,SH480529,1998-06-01,1999-06-01,Llanllyfni,113,Wales,2025-07-23,Postcode sector mean (mainly PO Boxes),W01000112,Gwynedd 008D,W01000112,Gwynedd 008D
LL54 6ZG,No,53.052333,-4.268224,248067,352970,SH480529,1999-06-01,2000-09-01,Llanllyfni,113,Wales,2025-07-23,Postcode sector mean (mainly PO Boxes),W01000112,Gwynedd 008D,W01000112,Gwynedd 008D