Gwynedd Postcodes County

Gwynedd is a predominantly rural county in north west Wales, known for its dramatic landscapes, long coastline and strong Welsh language and cultural traditions. The county stretches from the Irish Sea inland to some of the most mountainous areas in Wales, creating a setting of rugged hills, river valleys and open countryside. Its geography has played a significant role in shaping settlement patterns and local ways of life.

The county includes towns such as Bangor, Caernarfon, Porthmadog and Dolgellau, alongside many smaller villages and rural communities. Bangor serves as a centre for education and services, while Caernarfon has long been associated with Welsh history and governance. Farming, tourism and education remain important to the local economy, supporting communities spread across a wide and often remote area.

Gwynedd is strongly defined by its natural environment, with mountains, coastline and extensive walking routes forming part of everyday life. Outdoor activities, conservation and cultural heritage are closely linked throughout the county. Taken together, Gwynedd offers a calm and enduring blend of rural landscape, historic towns and living Welsh culture, giving it a distinctive and well rooted character within Wales.

6,374
Postcodes
26
Districts
136,899
Population
Wales
Country

Postcode districts in Gwynedd

DistrictPost townPostcodesPopulation
LL57 Bangor 901 27,588
LL53 Pwllheli 812 17,142
LL55 Caernarfon 741 21,444
LL54 Caernarfon 521 11,380
SY20 Machynlleth 422 6,917
LL41 Blaenau Ffestiniog 373 6,472
LL21 Corwen 369 6,442
LL40 Dolgellau 358 4,210
LL36 Tywyn 248 4,660
LL23 Bala 199 4,136
LL49 Porthmadog 196 4,502
LL33 Llanfairfechan 168 3,906
LL48 Penrhyndeudraeth 159 2,603
LL52 Criccieth 158 2,770
LL42 Barmouth 151 2,545
LL35 Aberdyfi 100 865
LL46 Harlech 93 1,856
LL56 Y Felinheli 73 2,299
LL45 Llanbedr 54 708
LL44 Dyffryn Ardudwy 52 1,028
LL38 Fairbourne 47 724
LL47 Talsarnau 47 537
LL51 Garndolbenmaen 45 888
LL37 Llwyngwril 40 554
LL43 Talybont 28 487
LL39 Arthog 19 236

Frequently asked questions

How many postcodes are in Gwynedd?

There are approximately 6,374 postcodes in Gwynedd.

How many postcode districts are in Gwynedd?

Gwynedd contains 26 postcode districts.

What is the population of Gwynedd?

The postcode districts in Gwynedd have a combined population of about 136,899.