Postcodes in Gwynedd page 44 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

Website: https://www.gwynedd.llyw.cymru/

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 1HU Menai 53.146262 -4.266308 248526 363413 SH485634
LL55 1HW Menai 53.14589 -4.264135 248670 363367 SH486633
LL55 1HY Menai 53.144981 -4.267481 248443 363273 SH484632
LL55 1LA Menai 53.144917 -4.268046 248405 363267 SH484632
LL55 1LB Menai 53.144331 -4.26809 248400 363202 SH483632
LL55 1LE Menai 53.148868 -4.265473 248591 363701 SH485637
LL55 1LF Menai 53.150598 -4.263351 248739 363889 SH487638
LL55 1LH Canol Tref Caernarfon 53.142421 -4.273971 248000 363002 SH479630
LL55 1LL Menai 53.149534 -4.262083 248820 363768 SH488637
LL55 1LN Menai 53.149942 -4.265709 248579 363821 SH485638
LL55 1LP Menai 53.153102 -4.264051 248701 364169 SH487641
LL55 1LR Menai 53.152623 -4.260914 248909 364109 SH489641
LL55 1LS Menai 53.154239 -4.25913 249034 364285 SH490642
LL55 1LW Menai 53.151574 -4.263566 248728 363998 SH487639
LL55 1NA Peblig 53.140217 -4.268397 248365 362745 SH483627
LL55 1NB Peblig 53.140746 -4.267991 248394 362803 SH483628
LL55 1ND Peblig 53.140247 -4.269176 248313 362750 SH483627
LL55 1NE Peblig 53.139998 -4.269013 248323 362722 SH483627
LL55 1NF Canol Tref Caernarfon 53.139783 -4.270841 248200 362702 SH481627
LL55 1NG Canol Tref Caernarfon 53.139783 -4.270841 248200 362702 SH481627
LL55 1NH Canol Tref Caernarfon 53.139726 -4.273828 248000 362702 SH479627
LL55 1NL Canol Tref Caernarfon 53.138857 -4.272287 248100 362602 SH480626
LL55 1NN Canol Tref Caernarfon 53.140096 -4.27328 248038 362742 SH480627
LL55 1NP Canol Tref Caernarfon 53.139752 -4.272977 248057 362703 SH480627
LL55 1NR Canol Tref Caernarfon 53.142421 -4.273971 248000 363002 SH479630
LL55 1NS Canol Tref Caernarfon 53.14051 -4.272793 248072 362787 SH480627
LL55 1NT Canol Tref Caernarfon 53.140596 -4.27537 247900 362802 SH478628
LL55 1NU Canol Tref Caernarfon 53.140567 -4.276863 247800 362802 SH477628
LL55 1NW Canol Tref Caernarfon 53.140277 -4.272796 248071 362761 SH480627
LL55 1NY Canol Tref Caernarfon 53.142421 -4.273971 248000 363002 SH479630
LL55 1PA Menai 53.141053 -4.270728 248212 362843 SH482628
LL55 1PB Menai 53.141352 -4.270625 248220 362876 SH482628
LL55 1PD Menai 53.14158 -4.270936 248200 362902 SH481629
LL55 1PE Menai 53.141531 -4.271128 248187 362897 SH481628
LL55 1PF Menai 53.142191 -4.269996 248265 362968 SH482629
LL55 1PG Menai 53.142253 -4.268624 248357 362972 SH483629
LL55 1PH Menai 53.142062 -4.269227 248316 362952 SH483629
LL55 1PL Menai 53.141791 -4.269736 248281 362923 SH482629
LL55 1PN Menai 53.141435 -4.269074 248324 362882 SH483628
LL55 1PP Canol Tref Caernarfon 53.14082 -4.273034 248057 362822 SH480628
LL55 1PR Canol Tref Caernarfon 53.140935 -4.273653 248016 362836 SH480628
LL55 1PS Cadnant 53.14308 -4.25968 248958 363045 SH489630
LL55 1PT Menai 53.140762 -4.269951 248263 362809 SH482628
LL55 1PU Cadnant 53.143061 -4.258274 249052 363040 SH490630
LL55 1PW Menai 53.141326 -4.268709 248348 362869 SH483628
LL55 1QL Canol Tref Caernarfon 53.140749 -4.272088 248120 362812 SH481628
LL55 1RB Canol Tref Caernarfon 53.139976 -4.274858 247932 362732 SH479627
LL55 1RD Canol Tref Caernarfon 53.140428 -4.274748 247941 362782 SH479627
LL55 1RE Bethel a'r Felinheli 53.164156 -4.213124 252144 365292 SH521652
LL55 1RF Canol Tref Caernarfon 53.140224 -4.275529 247888 362761 SH478627
LL55 1RG Canol Tref Caernarfon 53.140909 -4.275446 247896 362837 SH478628
LL55 1RH Canol Tref Caernarfon 53.140871 -4.276027 247857 362834 SH478628
LL55 1RL Canol Tref Caernarfon 53.140567 -4.276863 247800 362802 SH477628
LL55 1RN Canol Tref Caernarfon 53.140636 -4.277525 247756 362811 SH477628
LL55 1RP Canol Tref Caernarfon 53.139669 -4.276816 247800 362702 SH477627
LL55 1RR Canol Tref Caernarfon 53.140268 -4.276085 247851 362767 SH478627
LL55 1RS Cadnant 53.143974 -4.259009 249006 363143 SH490631
LL55 1RT Canol Tref Caernarfon 53.141278 -4.276871 247802 362881 SH478628
LL55 1RU Canol Tref Caernarfon 53.141652 -4.276577 247823 362922 SH478629
LL55 1RW Canol Tref Caernarfon 53.14101 -4.27581 247872 362849 SH478628
LL55 1RY Canol Tref Caernarfon 53.141012 -4.273388 248034 362844 SH480628
LL55 1SA Canol Tref Caernarfon 53.141737 -4.27682 247807 362932 SH478629
LL55 1SB Cadnant 53.148007 -4.255393 249262 363584 SH492635
LL55 1SD Canol Tref Caernarfon 53.139641 -4.278309 247700 362702 SH476627
LL55 1SE Canol Tref Caernarfon 53.140459 -4.276902 247797 362790 SH477627
LL55 1SF Canol Tref Caernarfon 53.139641 -4.278309 247700 362702 SH476627
LL55 1SG Canol Tref Caernarfon 53.139694 -4.278357 247697 362708 SH476627
LL55 1SH Canol Tref Caernarfon 53.140255 -4.277206 247776 362768 SH477627
LL55 1SL Canol Tref Caernarfon 53.139786 -4.277779 247736 362717 SH477627
LL55 1SN Canol Tref Caernarfon 53.140641 -4.278183 247712 362813 SH477628
LL55 1SP Canol Tref Caernarfon 53.141466 -4.277344 247771 362903 SH477629
LL55 1SQ Canol Tref Caernarfon 53.143478 -4.275088 247929 363122 SH479631
LL55 1SR Canol Tref Caernarfon 53.142158 -4.277859 247739 362981 SH477629
LL55 1SS Canol Tref Caernarfon 53.142052 -4.276792 247810 362967 SH478629
LL55 1ST Canol Tref Caernarfon 53.141377 -4.274962 247930 362888 SH479628
LL55 1SU Canol Tref Caernarfon 53.141532 -4.275314 247907 362906 SH479629
LL55 1SW Canol Tref Caernarfon 53.141181 -4.277673 247748 362872 SH477628
LL55 1SY Canol Tref Caernarfon 53.141887 -4.274615 247955 362944 SH479629
LL55 1SZ Canol Tref Caernarfon 53.141274 -4.274688 247948 362876 SH479628
LL55 1TA Canol Tref Caernarfon 53.141828 -4.275823 247874 362940 SH478629
LL55 1TB Canol Tref Caernarfon 53.142327 -4.274654 247954 362993 SH479629
LL55 1TD Canol Tref Caernarfon 53.14268 -4.274553 247962 363032 SH479630
LL55 1TE Canol Tref Caernarfon 53.143291 -4.275512 247900 363102 SH478631
LL55 1TF Canol Tref Caernarfon 53.143291 -4.275512 247900 363102 SH478631
LL55 1TG Canol Tref Caernarfon 53.142503 -4.275336 247909 363014 SH479630
LL55 1TH Canol Tref Caernarfon 53.14455 -4.275025 247937 363241 SH479632
LL55 1TL Canol Tref Caernarfon 53.140607 -4.274802 247938 362802 SH479628
LL55 1TP Menai 53.158025 -4.252897 249464 364693 SH494646
LL55 1TR Bethel a'r Felinheli 53.164548 -4.248855 249757 365410 SH497654
LL55 1TS Bethel a'r Felinheli 53.165941 -4.244125 250078 365555 SH500655
LL55 1TT Bethel a'r Felinheli 53.172783 -4.231689 250933 366290 SH509662
LL55 1TU Bethel a'r Felinheli 53.166192 -4.229327 251068 365552 SH510655
LL55 1TW Menai 53.15732 -4.257841 249131 364625 SH491646
LL55 1TY Bethel a'r Felinheli 53.171209 -4.215836 251987 366082 SH519660
LL55 1UA Cwm-y-glo 53.148981 -4.225608 251257 363630 SH512636
LL55 1UB Bethel a'r Felinheli 53.157483 -4.215189 251983 364554 SH519645
LL55 1UD Cwm-y-glo 53.1469 -4.22586 251233 363399 SH512633
LL55 1UE Bethel a'r Felinheli 53.170789 -4.241131 250295 366088 SH502660
LL55 1UH Cadnant 53.151984 -4.244294 250018 364003 SH500640
LL55 1UL Bethel a'r Felinheli 53.162012 -4.220134 251668 365068 SH516650
Contains OS data © Crown copyright and database right 2026
Contains Royal Mail data © Royal Mail copyright and database right 2026
Contains National Statistics data © Crown copyright and database rights 2026
Source: Office for National Statistics licensed under the Open Government Licence v.3.0
Contains data from Wikipedia covered by the Creative Commons license