Postcodes in Gwynedd page 38 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
LL54 5LD Yr Eifl 52.996376 -4.431259 236930 347105 SH369471
LL54 5LE Yr Eifl 52.994382 -4.423263 237459 346865 SH374468
LL54 5LF Yr Eifl 52.995266 -4.423104 237473 346963 SH374469
LL54 5LH Yr Eifl 52.993977 -4.430751 236955 346837 SH369468
LL54 5LL Y Groeslon 53.080433 -4.312405 245207 356190 SH452561
LL54 5LN Yr Eifl 52.993868 -4.428599 237099 346820 SH370468
LL54 5LP Yr Eifl 52.993914 -4.427231 237191 346822 SH371468
LL54 5LR Yr Eifl 52.993305 -4.428002 237137 346756 SH371467
LL54 5LS Yr Eifl 52.992678 -4.42743 237173 346685 SH371466
LL54 5LT Yr Eifl 52.991495 -4.42638 237239 346551 SH372465
LL54 5LU Yr Eifl 52.992152 -4.427639 237157 346627 SH371466
LL54 5LW Yr Eifl 52.993482 -4.427251 237188 346774 SH371467
LL54 5LY Yr Eifl 52.992515 -4.429254 237050 346671 SH370466
LL54 5NA Yr Eifl 52.992494 -4.437329 236508 346687 SH365466
LL54 5NB Yr Eifl 52.98609 -4.425123 237303 345947 SH373459
LL54 5NG Clynnog 53.020921 -4.36451 241499 349685 SH414496
LL54 5NH Clynnog 53.021348 -4.366964 241336 349738 SH413497
LL54 5NL Clynnog 53.020279 -4.365131 241455 349615 SH414496
LL54 5NN Clynnog 53.016917 -4.377725 240598 349269 SH405492
LL54 5NP Clynnog 53.020426 -4.364528 241496 349630 SH414496
LL54 5NR Clynnog 53.018814 -4.363724 241544 349449 SH415494
LL54 5NS Clynnog 53.015922 -4.362701 241602 349125 SH416491
LL54 5NT Clynnog 53.016346 -4.357178 241974 349160 SH419491
LL54 5NW Clynnog 53.008951 -4.36958 241115 348365 SH411483
LL54 5PB Clynnog 53.021307 -4.363607 241561 349726 SH415497
LL54 5PD Clynnog 53.027755 -4.360857 241769 350437 SH417504
LL54 5PE Clynnog 53.021753 -4.364257 241519 349777 SH415497
LL54 5PF Clynnog 53.019462 -4.365981 241395 349526 SH413495
LL54 5PG Clynnog 53.013294 -4.381268 240346 348874 SH403488
LL54 5PH Clynnog 53.01076 -4.380308 240402 348590 SH404485
LL54 5PL Clynnog 53.009904 -4.383078 240213 348501 SH402485
LL54 5PN Clynnog 53.010779 -4.388762 239835 348611 SH398486
LL54 5PP Clynnog 53.008084 -4.38508 240072 348303 SH400483
LL54 5PR Clynnog 53.008143 -4.387066 239939 348314 SH399483
LL54 5PS Yr Eifl 53.002227 -4.397784 239198 347680 SH391476
LL54 5PT Yr Eifl 52.995153 -4.404768 238703 346909 SH387469
LL54 5PW Clynnog 53.00916 -4.384334 240126 348421 SH401484
LL54 5RA Y Bontnewydd 53.118654 -4.309615 245531 360435 SH455604
LL54 5RB Llanwnda 53.109205 -4.292418 246648 359347 SH466593
LL54 5RD Y Bontnewydd 53.114701 -4.288557 246926 359950 SH469599
LL54 5RE Y Bontnewydd 53.114504 -4.293627 246586 359939 SH465599
LL54 5RF Y Bontnewydd 53.121377 -4.297146 246375 360711 SH463607
LL54 5RG Canol Tref Caernarfon 53.120591 -4.27911 247579 360585 SH475605
LL54 5RH Y Bontnewydd 53.120431 -4.285125 247176 360580 SH471605
LL54 5RL Canol Tref Caernarfon 53.12466 -4.275559 247831 361030 SH478610
LL54 5RN Y Bontnewydd 53.133866 -4.293432 246668 362092 SH466620
LL54 5RP Y Bontnewydd 53.134162 -4.296229 246482 362131 SH464621
LL54 5RR Canol Tref Caernarfon 53.13839 -4.281652 247472 362570 SH474625
LL54 5RS Canol Tref Caernarfon 53.135701 -4.278863 247649 362265 SH476622
LL54 5RT Canol Tref Caernarfon 53.135064 -4.282552 247400 362202 SH473622
LL54 5RU Y Bontnewydd 53.126048 -4.300176 246189 361237 SH461612
LL54 5RW Y Bontnewydd 53.133878 -4.29744 246400 362102 SH463621
LL54 5SD Llanwnda 53.093107 -4.283273 247203 357537 SH472575
LL54 5SE Y Groeslon 53.087706 -4.291066 246662 356953 SH466569
LL54 5SF Y Groeslon 53.08725 -4.288623 246824 356897 SH468568
LL54 5SG Y Groeslon 53.087772 -4.290935 246671 356960 SH466569
LL54 5SH Y Groeslon 53.090035 -4.295282 246388 357221 SH463572
LL54 5SJ Y Groeslon 53.088163 -4.29118 246656 357004 SH466570
LL54 5SL Y Groeslon 53.091243 -4.288566 246842 357341 SH468573
LL54 5SN Y Groeslon 53.087779 -4.294759 246415 356969 SH464569
LL54 5SP Y Groeslon 53.080666 -4.304131 245762 356198 SH457561
LL54 5SR Y Groeslon 53.082327 -4.306086 245637 356387 SH456563
LL54 5SS Y Groeslon 53.080256 -4.306244 245619 356157 SH456561
LL54 5ST Y Groeslon 53.079004 -4.312866 245171 356032 SH451560
LL54 5SU Y Groeslon 53.077763 -4.313337 245135 355895 SH451558
LL54 5SW Y Groeslon 53.082754 -4.297986 246181 356417 SH461564
LL54 5SY Y Groeslon 53.07916 -4.314084 245090 356052 SH450560
LL54 5TA Y Groeslon 53.079887 -4.317378 244872 356140 SH448561
LL54 5TB Y Groeslon 53.079443 -4.314323 245075 356084 SH450560
LL54 5TD Y Groeslon 53.079701 -4.313979 245099 356112 SH450561
LL54 5TE Y Groeslon 53.079796 -4.313252 245148 356121 SH451561
LL54 5TF Y Groeslon 53.087074 -4.307938 245530 356919 SH455569
LL54 5TG Llanwnda 53.09299 -4.313049 245209 357588 SH452575
LL54 5TH Y Groeslon 53.086028 -4.306702 245609 356800 SH456567
LL54 5TJ Y Groeslon 53.080046 -4.315236 245016 356153 SH450561
LL54 5TL Llanwnda 53.092131 -4.299874 246088 357464 SH460574
LL54 5TN Y Groeslon 53.072944 -4.323902 244410 355382 SH444553
LL54 5TP Y Groeslon 53.100848 -4.336073 243696 358512 SH436585
LL54 5TQ Y Groeslon 53.080171 -4.314347 245076 356165 SH450561
LL54 5TR Y Groeslon 53.079397 -4.316217 244948 356083 SH449560
LL54 5TS Y Groeslon 53.079583 -4.315451 245000 356102 SH449561
LL54 5TT Y Groeslon 53.080363 -4.31373 245118 356185 SH451561
LL54 5TU Y Bontnewydd 53.115797 -4.284849 247178 360064 SH471600
LL54 5TW Y Groeslon 53.086775 -4.336176 243638 356947 SH436569
LL54 5TY Y Bontnewydd 53.114723 -4.278008 247632 359930 SH476599
LL54 5UA Llanwnda 53.103763 -4.277563 247623 358710 SH476587
LL54 5UB Llanwnda 53.103278 -4.280361 247434 358662 SH474586
LL54 5UD Llanwnda 53.103916 -4.274702 247815 358721 SH478587
LL54 5UE Llanwnda 53.100556 -4.278798 247529 358356 SH475583
LL54 5UF Llanwnda 53.096517 -4.289219 246817 357929 SH468579
LL54 5UG Llanwnda 53.099381 -4.293659 246530 358257 SH465582
LL54 5UH Llanwnda 53.100515 -4.303369 245884 358404 SH458584
LL54 5UL Llanwnda 53.104898 -4.308698 245543 358903 SH455589
LL54 5UN Llanwnda 53.104887 -4.297179 246314 358877 SH463588
LL54 5UP Llanwnda 53.103676 -4.276468 247696 358698 SH476586
LL54 5UW Llanwnda 53.106205 -4.295994 246398 359021 SH463590
LL54 5WA Peblig 53.140304 -4.248171 249718 362712 SH497627
LL54 5WB Clynnog 53.035793 -4.351318 242438 351310 SH424513
LL54 5WD Peblig 53.140304 -4.248171 249718 362712 SH497627
LL54 5WE Peblig 53.140304 -4.248171 249718 362712 SH497627
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