Postcodes in Gwynedd page 63 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
LL57 4PG Tre-garth a Mynydd Llandygái 53.190446 -4.086551 260690 367962 SH606679
LL57 4PH Tre-garth a Mynydd Llandygái 53.190714 -4.085141 260785 367989 SH607679
LL57 4PL Tre-garth a Mynydd Llandygái 53.189826 -4.090128 260449 367900 SH604678
LL57 4PN Tre-garth a Mynydd Llandygái 53.189415 -4.092069 260318 367858 SH603678
LL57 4PP Tre-garth a Mynydd Llandygái 53.187796 -4.094639 260141 367683 SH601676
LL57 4PR Tre-garth a Mynydd Llandygái 53.185224 -4.095711 260061 367399 SH600673
LL57 4PS Tre-garth a Mynydd Llandygái 53.189981 -4.092051 260321 367921 SH603679
LL57 4PT Tre-garth a Mynydd Llandygái 53.190047 -4.092384 260299 367929 SH602679
LL57 4PU Tre-garth a Mynydd Llandygái 53.189951 -4.092768 260273 367919 SH602679
LL57 4PW Tre-garth a Mynydd Llandygái 53.188779 -4.092412 260293 367788 SH602677
LL57 4PY Tre-garth a Mynydd Llandygái 53.189503 -4.093675 260211 367871 SH602678
LL57 4RA Tre-garth a Mynydd Llandygái 53.187356 -4.096114 260041 367637 SH600676
LL57 4RB Tre-garth a Mynydd Llandygái 53.185675 -4.096646 260000 367451 SH599674
LL57 4RD Tre-garth a Mynydd Llandygái 53.184302 -4.095995 260039 367297 SH600672
LL57 4RE Tre-garth a Mynydd Llandygái 53.183564 -4.096543 260000 367216 SH599672
LL57 4RF Tre-garth a Mynydd Llandygái 53.182577 -4.095911 260039 367105 SH600671
LL57 4RG Tre-garth a Mynydd Llandygái 53.18211 -4.094856 260108 367051 SH601670
LL57 4RH Tre-garth a Mynydd Llandygái 53.181413 -4.094597 260123 366973 SH601669
LL57 4RJ Tre-garth a Mynydd Llandygái 53.182603 -4.094954 260103 367106 SH601671
LL57 4RL Tre-garth a Mynydd Llandygái 53.180208 -4.09364 260183 366837 SH601668
LL57 4RN Tre-garth a Mynydd Llandygái 53.177291 -4.091269 260332 366508 SH603665
LL57 4RP Tre-garth a Mynydd Llandygái 53.180743 -4.102541 259590 366914 SH595669
LL57 4RR Tre-garth a Mynydd Llandygái 53.19008 -4.08282 260938 367914 SH609679
LL57 4RU Canol Bangor 53.218037 -4.137352 257388 371131 SH573711
LL57 4RW Tre-garth a Mynydd Llandygái 53.177383 -4.096795 259963 366529 SH599665
LL57 4RY Canol Bangor 53.21816 -4.138527 257310 371147 SH573711
LL57 4SA Canol Bangor 53.218035 -4.139449 257248 371135 SH572711
LL57 4SB Canol Bangor 53.218 -4.140421 257183 371133 SH571711
LL57 4SD Canol Bangor 53.217585 -4.139487 257244 371085 SH572710
LL57 4SE Canol Bangor 53.217677 -4.139866 257219 371096 SH572710
LL57 4SF Canol Bangor 53.217422 -4.140063 257205 371068 SH572710
LL57 4SG Dewi 53.216491 -4.14084 257150 370966 SH571709
LL57 4SH Dewi 53.21488 -4.142422 257039 370790 SH570707
LL57 4SJ Dewi 53.211194 -4.149906 256527 370395 SH565703
LL57 4SL Dewi 53.216774 -4.143101 257000 371002 SH569710
LL57 4SN Dewi 53.214873 -4.141793 257081 370788 SH570707
LL57 4SP Dewi 53.215715 -4.143977 256938 370886 SH569708
LL57 4SR Dewi 53.213564 -4.144603 256889 370648 SH568706
LL57 4SS Arllechwedd 53.216538 -4.108444 259313 370907 SH593709
LL57 4ST Dewi 53.212668 -4.145921 256798 370551 SH567705
LL57 4SU Dewi 53.210306 -4.148783 256599 370294 SH565702
LL57 4SW Dewi 53.215202 -4.143022 257000 370827 SH569708
LL57 4SX Dewi 53.214784 -4.143735 256951 370782 SH569707
LL57 4SY Dewi 53.214405 -4.142353 257042 370737 SH570707
LL57 4TA Dewi 53.213898 -4.143511 256963 370683 SH569706
LL57 4TB Dewi 53.214495 -4.145323 256844 370753 SH568707
LL57 4TD Dewi 53.214752 -4.145052 256863 370781 SH568707
LL57 4TE Dewi 53.213231 -4.147132 256719 370616 SH567706
LL57 4TF Dewi 53.213885 -4.14727 256712 370689 SH567706
LL57 4TG Dewi 53.212449 -4.148591 256619 370532 SH566705
LL57 4TH Dewi 53.215187 -4.148354 256644 370836 SH566708
LL57 4TJ Dewi 53.217427 -4.142789 257023 371074 SH570710
LL57 4TL Dewi 53.214859 -4.14958 256561 370802 SH565708
LL57 4TN Dewi 53.21408 -4.148912 256603 370714 SH566707
LL57 4TP Dewi 53.217833 -4.142675 257032 371119 SH570711
LL57 4TQ Dewi 53.217252 -4.145027 256873 371059 SH568710
LL57 4TR Dewi 53.215025 -4.149828 256545 370821 SH565708
LL57 4TS Dewi 53.216037 -4.146554 256767 370927 SH567709
LL57 4TT Dewi 53.215642 -4.145531 256834 370881 SH568708
LL57 4TU Dewi 53.210378 -4.148772 256600 370302 SH565703
LL57 4TW Dewi 53.214082 -4.150305 256510 370717 SH565707
LL57 4TX Arllechwedd 53.199705 -4.122754 258302 369063 SH583690
LL57 4TY Dewi 53.210324 -4.151764 256400 370302 SH563703
LL57 4UA Penisa'r-waun 53.169647 -4.128436 257823 365731 SH578657
LL57 4UB Arllechwedd 53.205626 -4.120981 258440 369718 SH584697
LL57 4UD Arllechwedd 53.201467 -4.117197 258679 369248 SH586692
LL57 4UE Arllechwedd 53.2006 -4.121496 258389 369160 SH583691
LL57 4UF Arllechwedd 53.196201 -4.12565 258097 368679 SH580686
LL57 4UG Arllechwedd 53.198856 -4.133522 257580 368990 SH575689
LL57 4UH Arllechwedd 53.198694 -4.130564 257777 368966 SH577689
LL57 4UL Arllechwedd 53.198309 -4.130455 257783 368923 SH577689
LL57 4UN Arllechwedd 53.198668 -4.117882 258624 368938 SH586689
LL57 4UP Arllechwedd 53.197622 -4.117546 258643 368821 SH586688
LL57 4UR Arllechwedd 53.196226 -4.115171 258797 368661 SH587686
LL57 4UT Tre-garth a Mynydd Llandygái 53.186197 -4.11794 258579 367551 SH585675
LL57 4UU Arllechwedd 53.181273 -4.128892 257831 367025 SH578670
LL57 4UW Arllechwedd 53.197774 -4.118107 258606 368839 SH586688
LL57 4UX Tre-garth a Mynydd Llandygái 53.189685 -4.113382 258895 367930 SH588679
LL57 4UY Arllechwedd 53.18094 -4.134907 257428 367000 SH574669
LL57 4WP Canol Bangor 53.221729 -4.138046 257354 371543 SH573715
LL57 4WW Canol Bangor 53.221729 -4.138046 257354 371543 SH573715
LL57 4WZ Canol Bangor 53.221729 -4.138046 257354 371543 SH573715
LL57 4XF Dewi 53.214842 -4.150493 256500 370802 SH564708
LL57 4XG Dewi 53.214842 -4.150493 256500 370802 SH564708
LL57 4YA Arllechwedd 53.181076 -4.12583 258035 366997 SH580669
LL57 4YB Arllechwedd 53.179855 -4.118631 258512 366847 SH585668
LL57 4YD Tre-garth a Mynydd Llandygái 53.178598 -4.074108 261483 366620 SH614666
LL57 4YG Tre-garth a Mynydd Llandygái 53.167616 -4.065618 262015 365382 SH620653
LL57 4YH Arllechwedd 53.217985 -4.111526 259112 371074 SH591710
LL57 4YJ Tre-garth a Mynydd Llandygái 53.169758 -4.063911 262136 365617 SH621656
LL57 4YL Tre-garth a Mynydd Llandygái 53.173081 -4.058399 262515 365976 SH625659
LL57 4YN Tre-garth a Mynydd Llandygái 53.174501 -4.066219 261997 366149 SH619661
LL57 4YP Tre-garth a Mynydd Llandygái 53.17607 -4.071621 261641 366334 SH616663
LL57 4YQ Tre-garth a Mynydd Llandygái 53.193083 -4.089014 260534 368260 SH605682
LL57 4YR Tre-garth a Mynydd Llandygái 53.176407 -4.074496 261450 366377 SH614663
LL57 4YS Tre-garth a Mynydd Llandygái 53.175688 -4.07292 261553 366294 SH615662
LL57 4YT Tre-garth a Mynydd Llandygái 53.175322 -4.0738 261493 366255 SH614662
LL57 4YU Tre-garth a Mynydd Llandygái 53.174899 -4.073315 261524 366207 SH615662
LL57 4YW Tre-garth a Mynydd Llandygái 53.175597 -4.064206 262135 366267 SH621662
LL57 4YY Tre-garth a Mynydd Llandygái 53.1778 -4.07347 261523 366530 SH615665
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Contains National Statistics data © Crown copyright and database rights 2026
Source: Office for National Statistics licensed under the Open Government Licence v.3.0
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