Postcodes in Isle of Anglesey page 3 Unitary Authority

  1. All administrative areas

This page provides postcode data for the Isle of Anglesey UK Unitary Authority.

In 2021, Isle of Anglesey contained approximately 30,800 households with a population of about 68,900

In 2011, Isle of Anglesey contained approximately 30,594 households with a population of about 69,751

Website: https://www.anglesey.gov.wales/

Wards in this Unitary Authority
Aethwy ,   Bodowyr ,   Bro Aberffraw ,   Bro'r Llynnoedd ,   Canolbarth Môn ,   Cefni ,   Crigyll ,   Lligwy ,   Parc a'r Mynydd ,   Seiriol ,   Talybolion ,   Tref Cybi ,   Twrcelyn ,   Ynys Gybi
Parishes in this Unitary Authority
Aberffraw ,   Amlwch ,   Beaumaris ,   Bodedern ,   Bodffordd ,   Bodorgan ,   Bryngwran ,   Cwm Cadnant ,   Cylch-y-Garn ,   Holyhead ,   Llanbadrig ,   Llanddaniel Fab ,   Llanddona ,   Llanddyfnan ,   Llaneilian ,   Llaneugrad ,   Llanfachraeth ,   Llanfaelog ,   Llanfaethlu ,   Llanfair Pwllgwyngyll ,   Llanfair-Mathafarn-Eithaf ,   Llanfair-yn-Neubwll ,   Llanfihangel Ysgeifiog ,   Llangefni ,   Llangoed ,   Llangristiolus ,   Llanidan ,   Llannerch-y-medd ,   Mechell ,   Menai Bridge ,   Moelfre ,   Penmynydd ,   Pentraeth ,   Rhoscolyn ,   Rhosybol ,   Rhosyr ,   Trearddur ,   Tref Alaw ,   Trewalchmai ,   Valley
Key Active postcodeActive postcode Postcode no longer in usePostcode no longer in use

Postcode Ward Latitude Longitude Easting Northing Grid ref
LL58 8YQ Seiriol 53.260902 -4.103609 259781 375832 SH597758
LL58 8YR Seiriol 53.26641 -4.133646 257796 376504 SH577765
LL58 8YS Seiriol 53.26344 -4.108577 259458 376124 SH594761
LL58 8YT Seiriol 53.267554 -4.106215 259629 376577 SH596765
LL58 8YU Seiriol 53.268769 -4.110759 259330 376721 SH593767
LL58 8YW Seiriol 53.257091 -4.110693 259296 375422 SH592754
LL58 8YX Seiriol 53.259291 -4.10374 259767 375653 SH597756
LL58 8YY Seiriol 53.272077 -4.117371 258900 377102 SH588771
LL58 8YZ Seiriol 53.294491 -4.086742 261015 379535 SH610795
LL58 8ZF Seiriol 53.27934 -4.097584 260243 377871 SH602778
LL58 8ZG Seiriol 53.27934 -4.097584 260243 377871 SH602778
LL58 8ZH Seiriol 53.27934 -4.097584 260243 377871 SH602778
LL59 5AA Aethwy 53.225507 -4.175178 254888 372038 SH548720
LL59 5AB Aethwy 53.226442 -4.161368 255813 372114 SH558721
LL59 5AD Aethwy 53.227232 -4.165887 255514 372211 SH555722
LL59 5AE Aethwy 53.227251 -4.165289 255554 372212 SH555722
LL59 5AF Aethwy 53.227405 -4.165236 255558 372229 SH555722
LL59 5AG Aethwy 53.226647 -4.16394 255642 372142 SH556721
LL59 5AH Aethwy 53.226144 -4.166371 255478 372091 SH554720
LL59 5AJ Aethwy 53.225026 -4.164562 255595 371963 SH555719
LL59 5AL Aethwy 53.22586 -4.16369 255656 372054 SH556720
LL59 5AN Aethwy 53.22568 -4.166183 255489 372039 SH554720
LL59 5AP Aethwy 53.22614 -4.172034 255100 372102 SH550721
LL59 5AQ Seiriol 53.24847 -4.156812 256191 374555 SH561745
LL59 5AR Aethwy 53.226068 -4.163611 255662 372077 SH556720
LL59 5AS Aethwy 53.22559 -4.163677 255656 372024 SH556720
LL59 5AT Aethwy 53.225813 -4.163328 255680 372048 SH556720
LL59 5AU Aethwy 53.226319 -4.163144 255694 372104 SH556721
LL59 5AW Aethwy 53.22608 -4.164945 255573 372081 SH555720
LL59 5AX Aethwy 53.230008 -4.166956 255452 372522 SH554725
LL59 5AY Aethwy 53.226471 -4.163706 255657 372122 SH556721
LL59 5AZ Seiriol 53.244742 -4.1497 256653 374126 SH566741
LL59 5BA Aethwy 53.227068 -4.166987 255440 372195 SH554721
LL59 5BB Aethwy 53.227448 -4.167816 255386 372239 SH553722
LL59 5BD Aethwy 53.227391 -4.163543 255671 372224 SH556722
LL59 5BE Aethwy 53.227729 -4.164249 255625 372263 SH556722
LL59 5BF Aethwy 53.228129 -4.169408 255282 372318 SH552723
LL59 5BG Aethwy 53.228276 -4.167797 255390 372331 SH553723
LL59 5BH Aethwy 53.228788 -4.168797 255325 372390 SH553723
LL59 5BJ Seiriol 53.244162 -4.162845 255774 374088 SH557740
LL59 5BL Aethwy 53.227719 -4.167245 255425 372268 SH554722
LL59 5BN Aethwy 53.228849 -4.163437 255683 372386 SH556723
LL59 5BP Aethwy 53.227945 -4.165728 255527 372290 SH555722
LL59 5BS Aethwy 53.229768 -4.16188 255790 372485 SH557724
LL59 5BT Aethwy 53.230988 -4.160533 255884 372618 SH558726
LL59 5BU Aethwy 53.230371 -4.159872 255926 372548 SH559725
LL59 5BW Aethwy 53.228891 -4.16266 255735 372389 SH557723
LL59 5BY Aethwy 53.231046 -4.163263 255702 372630 SH557726
LL59 5DA Aethwy 53.232392 -4.170373 255232 372794 SH552727
LL59 5DB Aethwy 53.224648 -4.162131 255756 371916 SH557719
LL59 5DD Aethwy 53.225528 -4.162175 255756 372014 SH557720
LL59 5DE Aethwy 53.223962 -4.161752 255779 371839 SH557718
LL59 5DF Aethwy 53.225842 -4.162701 255722 372050 SH557720
LL59 5DG Aethwy 53.226078 -4.163072 255698 372077 SH556720
LL59 5DH Aethwy 53.226119 -4.163269 255685 372082 SH556720
LL59 5DL Aethwy 53.225717 -4.163174 255690 372037 SH556720
LL59 5DN Aethwy 53.225452 -4.162891 255708 372007 SH557720
LL59 5DP Aethwy 53.226031 -4.16268 255724 372071 SH557720
LL59 5DR Aethwy 53.224643 -4.16288 255706 371917 SH557719
LL59 5DS Aethwy 53.229588 -4.167339 255425 372476 SH554724
LL59 5DT Aethwy 53.223239 -4.164936 255564 371765 SH555717
LL59 5DU Aethwy 53.222282 -4.164678 255578 371658 SH555716
LL59 5DW Aethwy 53.225473 -4.163221 255686 372010 SH556720
LL59 5DX Aethwy 53.230512 -4.166922 255456 372578 SH554725
LL59 5DY Aethwy 53.223108 -4.162233 255744 371745 SH557717
LL59 5EA Aethwy 53.223932 -4.166364 255471 371845 SH554718
LL59 5EB Aethwy 53.225738 -4.16695 255438 372047 SH554720
LL59 5ED Aethwy 53.226112 -4.162669 255725 372080 SH557720
LL59 5EE Aethwy 53.226423 -4.16288 255712 372115 SH557721
LL59 5EF Aethwy 53.227226 -4.162216 255759 372203 SH557722
LL59 5EG Aethwy 53.226678 -4.162218 255757 372142 SH557721
LL59 5EH Aethwy 53.22633 -4.161557 255800 372102 SH557721
LL59 5EJ Aethwy 53.232181 -4.171546 255153 372773 SH551727
LL59 5EL Aethwy 53.226568 -4.161823 255783 372129 SH557721
LL59 5EN Aethwy 53.228008 -4.163214 255695 372292 SH556722
LL59 5EP Aethwy 53.22737 -4.16122 255826 372217 SH558722
LL59 5ER Aethwy 53.227167 -4.161539 255804 372195 SH558721
LL59 5ES Aethwy 53.227277 -4.160421 255879 372205 SH558722
LL59 5ET Aethwy 53.226357 -4.16006 255900 372102 SH558721
LL59 5EU Aethwy 53.226594 -4.158394 256012 372125 SH560721
LL59 5EW Aethwy 53.227997 -4.16185 255786 372288 SH557722
LL59 5EY Aethwy 53.225653 -4.161238 255819 372026 SH558720
LL59 5FZ Aethwy 53.225432 -4.161511 255800 372002 SH557720
LL59 5HA Aethwy 53.223233 -4.162764 255709 371760 SH557717
LL59 5HB Aethwy 53.222888 -4.161997 255759 371720 SH557717
LL59 5HD Aethwy 53.221808 -4.166497 255455 371609 SH554716
LL59 5HE Aethwy 53.222074 -4.162765 255705 371631 SH557716
LL59 5HF Aethwy 53.222186 -4.16304 255687 371644 SH556716
LL59 5HG Aethwy 53.22176 -4.164187 255609 371599 SH556715
LL59 5HH Aethwy 53.221663 -4.164093 255615 371588 SH556715
LL59 5HL Aethwy 53.221924 -4.164046 255619 371617 SH556716
LL59 5HN Aethwy 53.223002 -4.163606 255652 371736 SH556717
LL59 5HP Aethwy 53.230382 -4.168638 255341 372567 SH553725
LL59 5HS Aethwy 53.226666 -4.168825 255316 372154 SH553721
LL59 5HT Aethwy 53.226798 -4.167977 255373 372167 SH553721
LL59 5HU Aethwy 53.228032 -4.170826 255187 372310 SH551723
LL59 5HW Aethwy 53.22379 -4.162837 255706 371822 SH557718
LL59 5HY Aethwy 53.228511 -4.170671 255199 372363 SH551723
LL59 5LA Aethwy 53.227704 -4.175949 254844 372284 SH548722
LL59 5LB Aethwy 53.229248 -4.171652 255136 372447 SH551724
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




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