Postcodes in Gwynedd page 45 Unitary Authority

This page provides postcode data for the Gwynedd UK Unitary Authority.

In 2021, Gwynedd contained approximately 51,100 households with a population of about 117,400

In 2011, Gwynedd contained approximately 52,450 households with a population of about 121,818

Parishes in this Unitary Authority
Key Active postcodeActive postcode Postcode no longer in usePostcode no longer in use

Postcode Ward Latitude Longitude Easting Northing Grid ref
LL55 1YE Bethel a'r Felinheli 53.167906 -4.203906 252773 365690 SH527656
LL55 1YF Bethel a'r Felinheli 53.167543 -4.203109 252825 365648 SH528656
LL55 1YG Bethel a'r Felinheli 53.167856 -4.204188 252754 365685 SH527656
LL55 1YH Bethel a'r Felinheli 53.167216 -4.203766 252780 365613 SH527656
LL55 1YL Bethel a'r Felinheli 53.167229 -4.202106 252891 365611 SH528656
LL55 1YN Bethel a'r Felinheli 53.166959 -4.201598 252924 365580 SH529655
LL55 1YP Bethel a'r Felinheli 53.166271 -4.201369 252937 365503 SH529655
LL55 1YR Bethel a'r Felinheli 53.165354 -4.201875 252900 365402 SH528654
LL55 1YS Bethel a'r Felinheli 53.166043 -4.201551 252924 365478 SH529654
LL55 1YT Bethel a'r Felinheli 53.166389 -4.201794 252909 365517 SH529655
LL55 1YU Bethel a'r Felinheli 53.166138 -4.200808 252974 365487 SH529654
LL55 1YW Bethel a'r Felinheli 53.166474 -4.201603 252922 365526 SH529655
LL55 1YY Bethel a'r Felinheli 53.165069 -4.201262 252940 365369 SH529653
LL55 1ZA Peblig 53.140294 -4.248185 249717 362711 SH497627
LL55 1ZB Peblig 53.140304 -4.248171 249718 362712 SH497627
LL55 1ZD Cadnant 53.148217 -4.255703 249242 363608 SH492636
LL55 1ZE Peblig 53.140304 -4.248171 249718 362712 SH497627
LL55 1ZF Cadnant 53.148217 -4.255703 249242 363608 SH492636
LL55 1ZG Peblig 53.140304 -4.248171 249718 362712 SH497627
LL55 1ZH Canol Tref Caernarfon 53.140255 -4.277206 247776 362768 SH477627
LL55 1ZP Peblig 53.140304 -4.248171 249718 362712 SH497627
LL55 1ZU Peblig 53.140304 -4.248171 249718 362712 SH497627
LL55 2AA Canol Tref Caernarfon 53.139461 -4.27362 248013 362672 SH480626
LL55 2AB Canol Tref Caernarfon 53.139445 -4.272543 248085 362668 SH480626
LL55 2AD Canol Tref Caernarfon 53.139601 -4.272865 248064 362686 SH480626
LL55 2AE Canol Tref Caernarfon 53.13918 -4.271347 248164 362636 SH481626
LL55 2AF Canol Tref Caernarfon 53.138903 -4.271288 248167 362605 SH481626
LL55 2AG Hendre 53.132365 -4.261928 248770 361858 SH487618
LL55 2AH Cwm-y-glo 53.149048 -4.208518 252400 363602 SH523636
LL55 2AJ Llanrug 53.147678 -4.201404 252871 363435 SH528634
LL55 2AL Canol Tref Caernarfon 53.139421 -4.27148 248156 362663 SH481626
LL55 2AN Peblig 53.135605 -4.254175 249300 362202 SH492622
LL55 2AP Peblig 53.139459 -4.269463 248291 362663 SH482626
LL55 2AQ Cwm-y-glo 53.147083 -4.209733 252312 363386 SH523633
LL55 2AR Peblig 53.139926 -4.268561 248353 362713 SH483627
LL55 2AS Canol Tref Caernarfon 53.139438 -4.272452 248091 362667 SH480626
LL55 2AT Peblig 53.136427 -4.259197 248967 362304 SH489623
LL55 2AU Canol Tref Caernarfon 53.139819 -4.27651 247821 362718 SH478627
LL55 2AW Peblig 53.139749 -4.269359 248299 362695 SH482626
LL55 2AX Llanrug 53.147776 -4.19951 252998 363442 SH529634
LL55 2AY Canol Tref Caernarfon 53.139677 -4.277803 247734 362705 SH477627
LL55 2AZ Llanrug 53.148424 -4.195086 253296 363505 SH532635
LL55 2BA Cwm-y-glo 53.141332 -4.236532 250500 362802 SH504628
LL55 2BB Cwm-y-glo 53.143377 -4.234903 250616 363026 SH506630
LL55 2BD Peblig 53.140419 -4.249702 249616 362728 SH496627
LL55 2BE Y Bontnewydd 53.132266 -4.240546 250200 361802 SH501618
LL55 2BF Peblig 53.141078 -4.243322 250045 362788 SH500627
LL55 2BG Peblig 53.141608 -4.249076 249662 362859 SH496628
LL55 2BH Cwm-y-glo 53.139054 -4.241946 250130 362560 SH501625
LL55 2BJ Cadnant 53.142302 -4.250399 249576 362939 SH495629
LL55 2BL Cadnant 53.142262 -4.248273 249718 362930 SH497629
LL55 2BN Peblig 53.141857 -4.250196 249588 362889 SH495628
LL55 2BP Cwm-y-glo 53.148573 -4.236833 250505 363608 SH505636
LL55 2BQ Llanrug 53.148232 -4.198202 253087 363490 SH530634
LL55 2BS Cadnant 53.142245 -4.253461 249371 362939 SH493629
LL55 2BT Cadnant 53.142658 -4.248698 249691 362975 SH496629
LL55 2BU Peblig 53.140294 -4.248185 249717 362711 SH497627
LL55 2BW Cadnant 53.143496 -4.248143 249731 363067 SH497630
LL55 2BX Peblig 53.137898 -4.249376 249629 362447 SH496624
LL55 2BZ Hendre 53.132636 -4.260896 248840 361886 SH488618
LL55 2DA Llanrug 53.147906 -4.194911 253306 363447 SH533634
LL55 2DB Peblig 53.13984 -4.267854 248400 362702 SH483627
LL55 2DD Peblig 53.139834 -4.267255 248440 362700 SH484626
LL55 2DE Peblig 53.1404 -4.26727 248441 362763 SH484627
LL55 2DF Peblig 53.140417 -4.263563 248689 362757 SH486627
LL55 2DG Peblig 53.139478 -4.261854 248800 362649 SH487626
LL55 2DH Peblig 53.13954 -4.26235 248767 362657 SH487626
LL55 2DJ Hendre 53.13214 -4.263815 248643 361837 SH486618
LL55 2DL Peblig 53.139159 -4.263048 248719 362616 SH487626
LL55 2DN Peblig 53.139472 -4.263588 248684 362652 SH486626
LL55 2DP Peblig 53.138541 -4.260519 248886 362542 SH488625
LL55 2DQ Hendre 53.131918 -4.261292 248811 361807 SH488618
LL55 2DR Peblig 53.139205 -4.258714 249009 362612 SH490626
LL55 2DS Peblig 53.138839 -4.259069 248984 362572 SH489625
LL55 2DT Peblig 53.139667 -4.258514 249024 362663 SH490626
LL55 2DU Peblig 53.139871 -4.255834 249204 362680 SH492626
LL55 2DW Peblig 53.139196 -4.260613 248882 362615 SH488626
LL55 2DX Hendre 53.132657 -4.259298 248947 361885 SH489618
LL55 2DY Peblig 53.139743 -4.257367 249101 362669 SH491626
LL55 2DZ Peblig 53.139795 -4.264113 248650 362689 SH486626
LL55 2EA Peblig 53.139039 -4.256582 249151 362589 SH491625
LL55 2EB Peblig 53.138803 -4.255239 249240 362560 SH492625
LL55 2ED Peblig 53.140152 -4.254308 249307 362708 SH493627
LL55 2EE Peblig 53.138732 -4.255206 249242 362552 SH492625
LL55 2EF Peblig 53.138454 -4.257075 249116 362525 SH491625
LL55 2EG Peblig 53.137936 -4.260651 248875 362475 SH488624
LL55 2EH Peblig 53.137618 -4.259917 248923 362438 SH489624
LL55 2EJ Cadnant 53.147652 -4.240853 250233 363514 SH502635
LL55 2EL Peblig 53.137092 -4.260114 248908 362380 SH489623
LL55 2EN Peblig 53.136836 -4.260848 248858 362353 SH488623
LL55 2EP Peblig 53.137323 -4.262159 248772 362410 SH487624
LL55 2EQ Llanrug 53.147597 -4.197018 253164 363417 SH531634
LL55 2ER Peblig 53.136929 -4.263035 248712 362368 SH487623
LL55 2ES Peblig 53.136596 -4.26399 248647 362333 SH486623
LL55 2ET Peblig 53.136851 -4.264766 248596 362363 SH485623
LL55 2EU Peblig 53.137052 -4.263655 248671 362383 SH486623
LL55 2EW Peblig 53.137575 -4.261215 248836 362436 SH488624
LL55 2EX Canol Tref Caernarfon 53.138223 -4.27348 248018 362534 SH480625
LL55 2EZ Y Bontnewydd 53.116561 -4.271709 248060 360121 SH480601
LL55 2FA Canol Tref Caernarfon 53.128694 -4.266758 248434 361460 SH484614
Contains OS data © Crown copyright and database right 2025
Contains Royal Mail data © Royal Mail copyright and database right 2025
Contains National Statistics data © Crown copyright and database rights 2025
Source: Office for National Statistics licensed under the Open Government Licence v.3.0
Contains data from Wikipedia covered by the Creative Commons license