Postcodes in Gwynedd page 46 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 2GA Hendre 53.136304 -4.264677 248600 362302 SH485623
LL55 2GB Hendre 53.136304 -4.264677 248600 362302 SH485623
LL55 2HB Peblig 53.138289 -4.25436 249297 362501 SH492625
LL55 2HE Canol Tref Caernarfon 53.137961 -4.270207 248236 362498 SH482624
LL55 2HG Canol Tref Caernarfon 53.137987 -4.270746 248200 362502 SH481625
LL55 2HH Canol Tref Caernarfon 53.13797 -4.2707 248203 362500 SH482624
LL55 2HL Canol Tref Caernarfon 53.137711 -4.26964 248273 362469 SH482624
LL55 2HN Canol Tref Caernarfon 53.140995 -4.272864 248069 362841 SH480628
LL55 2HP Canol Tref Caernarfon 53.136013 -4.269595 248270 362280 SH482622
LL55 2HR Hendre 53.134772 -4.269111 248298 362141 SH482621
LL55 2HS Hendre 53.133727 -4.268787 248316 362024 SH483620
LL55 2HT Canol Tref Caernarfon 53.135697 -4.268727 248327 362243 SH483622
LL55 2HU Canol Tref Caernarfon 53.136157 -4.268661 248333 362294 SH483622
LL55 2HW Canol Tref Caernarfon 53.135246 -4.26972 248259 362195 SH482621
LL55 2HY Canol Tref Caernarfon 53.136451 -4.268766 248327 362327 SH483623
LL55 2LA Canol Tref Caernarfon 53.136689 -4.268585 248340 362353 SH483623
LL55 2LB Canol Tref Caernarfon 53.136334 -4.269269 248293 362315 SH482623
LL55 2LD Canol Tref Caernarfon 53.13721 -4.269046 248311 362412 SH483624
LL55 2LE Canol Tref Caernarfon 53.137221 -4.269405 248287 362414 SH482624
LL55 2LF Peblig 53.137858 -4.268108 248376 362482 SH483624
LL55 2LG Peblig 53.137174 -4.266218 248500 362402 SH484624
LL55 2LH Canol Tref Caernarfon 53.137053 -4.26835 248357 362393 SH483623
LL55 2LJ Hendre 53.133177 -4.266949 248437 361959 SH484619
LL55 2LL Canol Tref Caernarfon 53.136399 -4.267283 248426 362318 SH484623
LL55 2LN Peblig 53.136998 -4.265087 248575 362380 SH485623
LL55 2LP Hendre 53.135825 -4.265295 248557 362250 SH485622
LL55 2LQ Hendre 53.133168 -4.268862 248309 361962 SH483619
LL55 2LR Hendre 53.135339 -4.266286 248489 362198 SH484621
LL55 2LS Hendre 53.135108 -4.264719 248593 362169 SH485621
LL55 2LT Hendre 53.134692 -4.265325 248551 362124 SH485621
LL55 2LU Hendre 53.134091 -4.265712 248523 362058 SH485620
LL55 2LW Hendre 53.136037 -4.264095 248638 362271 SH486622
LL55 2LX Hendre 53.131499 -4.261599 248789 361761 SH487617
LL55 2LY Hendre 53.134264 -4.263718 248657 362073 SH486620
LL55 2LZ Hendre 53.133436 -4.261372 248811 361976 SH488619
LL55 2NA Canol Tref Caernarfon 53.139413 -4.273737 248005 362667 SH480626
LL55 2NB Canol Tref Caernarfon 53.139331 -4.273837 247998 362658 SH479626
LL55 2ND Canol Tref Caernarfon 53.13911 -4.274065 247982 362634 SH479626
LL55 2NE Canol Tref Caernarfon 53.139653 -4.273884 247996 362694 SH479626
LL55 2NF Canol Tref Caernarfon 53.139732 -4.27495 247925 362705 SH479627
LL55 2NG Y Bontnewydd 53.132266 -4.240546 250200 361802 SH501618
LL55 2NH Y Bontnewydd 53.132266 -4.240546 250200 361802 SH501618
LL55 2NJ Y Bontnewydd 53.132266 -4.240546 250200 361802 SH501618
LL55 2NL Y Bontnewydd 53.132266 -4.240546 250200 361802 SH501618
LL55 2NN Canol Tref Caernarfon 53.139184 -4.274921 247925 362644 SH479626
LL55 2NP Canol Tref Caernarfon 53.139277 -4.275255 247903 362655 SH479626
LL55 2NR Canol Tref Caernarfon 53.1388 -4.275275 247900 362602 SH478626
LL55 2NS Y Bontnewydd 53.132266 -4.240546 250200 361802 SH501618
LL55 2NT Canol Tref Caernarfon 53.1388 -4.275275 247900 362602 SH478626
LL55 2NU Canol Tref Caernarfon 53.1388 -4.275275 247900 362602 SH478626
LL55 2NW Canol Tref Caernarfon 53.139159 -4.27483 247931 362641 SH479626
LL55 2NY Canol Tref Caernarfon 53.1388 -4.275275 247900 362602 SH478626
LL55 2PA Y Bontnewydd 53.132266 -4.240546 250200 361802 SH501618
LL55 2PB Canol Tref Caernarfon 53.138638 -4.274817 247930 362583 SH479625
LL55 2PD Y Bontnewydd 53.132266 -4.240546 250200 361802 SH501618
LL55 2PE Canol Tref Caernarfon 53.138771 -4.276768 247800 362602 SH477626
LL55 2PF Canol Tref Caernarfon 53.137957 -4.27375 247999 362505 SH479625
LL55 2PG Canol Tref Caernarfon 53.139192 -4.27543 247891 362646 SH478626
LL55 2PH Canol Tref Caernarfon 53.137936 -4.272463 248085 362500 SH480624
LL55 2PL Y Bontnewydd 53.131672 -4.243878 249975 361743 SH499617
LL55 2PN Canol Tref Caernarfon 53.138616 -4.273575 248013 362578 SH480625
LL55 2PP Canol Tref Caernarfon 53.137901 -4.275227 247900 362502 SH478625
LL55 2PQ Canol Tref Caernarfon 53.139062 -4.272358 248096 362625 SH480626
LL55 2PR Canol Tref Caernarfon 53.13873 -4.273267 248034 362590 SH480625
LL55 2PS Canol Tref Caernarfon 53.138284 -4.272601 248077 362539 SH480625
LL55 2PT Canol Tref Caernarfon 53.138241 -4.27206 248113 362533 SH481625
LL55 2PU Canol Tref Caernarfon 53.138704 -4.272264 248101 362585 SH481625
LL55 2PW Canol Tref Caernarfon 53.138487 -4.273284 248032 362563 SH480625
LL55 2PY Y Bontnewydd 53.132266 -4.240546 250200 361802 SH501618
LL55 2RA Canol Tref Caernarfon 53.140625 -4.273876 248000 362802 SH479628
LL55 2RB Canol Tref Caernarfon 53.13837 -4.271409 248157 362546 SH481625
LL55 2RD Canol Tref Caernarfon 53.138121 -4.271247 248167 362518 SH481625
LL55 2RE Peblig 53.138781 -4.269682 248274 362588 SH482625
LL55 2RF Canol Tref Caernarfon 53.138202 -4.26986 248260 362524 SH482625
LL55 2RG Peblig 53.138776 -4.268515 248352 362585 SH483625
LL55 2RH Peblig 53.13951 -4.268195 248376 362666 SH483626
LL55 2RJ Peblig 53.139987 -4.266306 248504 362715 SH485627
LL55 2RL Peblig 53.138621 -4.267655 248409 362566 SH484625
LL55 2RN Peblig 53.138935 -4.266759 248470 362599 SH484625
LL55 2RP Peblig 53.139522 -4.266162 248512 362663 SH485626
LL55 2RQ Peblig 53.138849 -4.265633 248545 362587 SH485625
LL55 2RR Peblig 53.13849 -4.264164 248642 362544 SH486625
LL55 2RS Peblig 53.13787 -4.263175 248706 362473 SH487624
LL55 2RT Peblig 53.13861 -4.262092 248781 362553 SH487625
LL55 2RU Peblig 53.139847 -4.265162 248580 362697 SH485626
LL55 2RW Peblig 53.138846 -4.265319 248566 362586 SH485625
LL55 2RX Hendre 53.134305 -4.258233 249024 362066 SH490620
LL55 2RY Peblig 53.139203 -4.270137 248245 362636 SH482626
LL55 2RZ Peblig 53.138569 -4.266142 248510 362557 SH485625
LL55 2SA Peblig 53.139186 -4.265397 248562 362624 SH485626
LL55 2SB Hendre 53.133695 -4.260055 248900 362002 SH488620
LL55 2SD Hendre 53.133695 -4.260055 248900 362002 SH488620
LL55 2SE Y Bontnewydd 53.133521 -4.255501 249204 361973 SH492619
LL55 2SF Hendre 53.133706 -4.260444 248874 362004 SH488620
LL55 2SG Y Bontnewydd 53.132282 -4.245883 249843 361815 SH498618
LL55 2SH Y Bontnewydd 53.133425 -4.244882 249914 361940 SH499619
LL55 2SJ Peblig 53.136365 -4.25864 249004 362296 SH490622
LL55 2SL Cwm-y-glo 53.137729 -4.233549 250687 362395 SH506623
LL55 2SN Cwm-y-glo 53.142804 -4.229476 250977 362951 SH509629
LL55 2SP Cwm-y-glo 53.144226 -4.225063 251277 363100 SH512630
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