Caerphilly Postcodes County

Caerphilly is a county borough in south east Wales, lying between Cardiff and the upper South Wales Valleys. The area is defined by a varied landscape of hills, valleys and open countryside, which has shaped the development of its towns and communities over time. Its position close to the capital has also influenced patterns of commuting and growth, while much of the area retains a strong local identity.

The county borough includes towns such as Caerphilly, Blackwood, Ystrad Mynach and Bargoed, many of which expanded during the industrial period through coal mining and related industries. While those industries have declined, their legacy remains visible in the built environment and community structure. Today, Caerphilly supports a mix of local services, education and employment, with regeneration playing an important role in its ongoing development.

Caerphilly is particularly associated with its historic landmarks, most notably Caerphilly Castle, one of the largest castles in Wales. Beyond its heritage, the area offers access to walking routes, parks and open hillsides, providing opportunities for outdoor activity. Overall, Caerphilly presents a grounded mix of valley landscape, historic interest and everyday community life, giving it a steady and recognisable character within south east Wales.

7,551
Postcodes
12
Districts
304,638
Population
Wales
Country

Postcode districts in Caerphilly

DistrictPost townPostcodesPopulation
CF83 Caerphilly 1,213 54,963
NP11 Newport 912 37,305
NP12 Blackwood 899 32,244
CF37 Pontypridd 889 39,113
NP22 Tredegar 599 21,454
NP10 Newport 590 27,497
NP13 Abertillery 550 18,398
CF15 Cardiff 510 17,469
CF82 Hengoed 504 20,902
CF81 Bargoed 390 16,131
CF46 Treharris 348 14,512
NP24 New Tredegar 147 4,650

Frequently asked questions

How many postcodes are in Caerphilly?

There are approximately 7,551 postcodes in Caerphilly.

How many postcode districts are in Caerphilly?

Caerphilly contains 12 postcode districts.

What is the population of Caerphilly?

The postcode districts in Caerphilly have a combined population of about 304,638.