Gwynedd County Postcodes
Wales, United Kingdom · 27 codes
Gwynedd County in Wales has 27 postcodes, from LL21 to SY20, serving 268 places.
Postcodes in Gwynedd
| Postcode | Places |
|---|---|
| LL21 | Bethel, Crogen, Glan-yr-afon, Wenallt |
| LL23 | Bala, Cefn-ddwysarn, Ciltalgarth, Fron-goch, Glan-yr-afon, Llandderfel +14 more |
| LL33 | Abergwyngregyn, Gorddinog |
| LL35 | Aberdyfi |
| LL36 | Abergynolwyn, Bryncrug, Caethle, Dolgoch, Llanegryn, Llanfendigaid +9 more |
| LL37 | Llwyngwril |
| LL38 | Fairbourne, Friog |
| LL39 | Arthog |
| LL40 | Abergwynant, Bont Newydd, Bontddu, Brithdir, Dolgellau, Ganllwyd +10 more |
| LL41 | Bethania, Blaenau Ffestiniog, Bronaber, Cefndeuddwr, Ffestiniog, Gellilydan +4 more |
| LL42 | Barmouth, Caerdeon, Cutiau, Llanaber |
| LL43 | Tal-y-bont |
| LL44 | Coed Ystumgwern, Dyffryn Ardudwy, Llanddwywe, Llanenddwyn |
| LL45 | Llanbedr, Llandanwg, Pen-sarn, Pentre Gwynfryn |
| LL46 | Eisingrug, Glyn-Cywarch, Harlech, Llanfair |
| LL47 | Talsarnau, Ynys |
| LL48 | Cae Ddafydd, Croesor, Garreg, Llanfrothen, Minffordd, Penrhyndeudraeth +3 more |
| LL49 | Borth-y-Gest, Dolbenmaen, Golan, Llanfihangel-y-pennant, Morfa Bychan, Penmorfa +4 more |
| LL51 | Bryncir, Garn-Dolbenmaen, Glan-Dwyfach |
| LL52 | Criccieth, Gell, Llanystumdwy, Pentrefelin |
| LL53 | Aber, Aberdaron, Abererch, Abersoch, Anelog, Bodfuan +54 more |
| LL54 | Aberdesach, Betws Garmon, Bwlch Derwin, Capeluchaf, Carmel, Cennin +22 more |
| LL55 | Beddgelert, Bethel, Bontnewydd, Brynrefail, Caeathro, Caernarfon +22 more |
| LL56 | Y Felinheli |
| LL57 | Bangor, Bethesda, Braichmelyn, Crymlyn, Douglas Hill, Garth +13 more |
| LL63 | Tycroes |
| SY20 | Aber-cywarch, Aberangell, Aberllefenni, Corris, Corris Uchaf, Cwm-Cewydd +8 more |
Frequently asked questions
What is the postcode of Gwynedd?
Gwynedd has 27 postcodes, from LL21 to SY20. The table lists the places each one serves.
How many places are listed in Gwynedd County?
268 places.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.