Caerphilly Population 2026

Caerphilly has a population of 31,060, making it the #400 biggest city in 🇬🇧 United Kingdom, located in Wales. It is about 289× smaller than London, the country's biggest city.

Location of Caerphilly (capital London shown for reference). Boundaries: Natural Earth.

Population (city proper)

31,060

Rank in United Kingdom

#400

Coordinates

51.57°N, 3.22°W

~94 m elevation · Europe/London

Distance to capital (London)

214 km

133 miles, straight line

Other big cities in Wales

City	Population	Rank in United Kingdom
Cardiff	372,089	#10
Swansea	300,352	#21
Newport	161,506	#56
Rhondda	69,506	#157
Wrexham	65,692	#166
Buckley	63,576	#175
Tonypandy	62,545	#182
Barry	54,673	#213

Cities near Caerphilly

Risca20,443 people · ~9 km away
Pontypridd31,206 people · ~9 km away
Gelligaer17,376 people · ~10 km away
Blackwood15,476 people · ~10 km away
Cardiff372,089 people · ~11 km away
Newport161,506 people · ~15 km away

FAQ

What is the population of Caerphilly?

Caerphilly has a population of 31,060 (city proper, latest official figure via GeoNames), making it the #400 biggest city in United Kingdom.

What region is Caerphilly in?

Caerphilly is located in Wales, United Kingdom.

Is Caerphilly the capital of United Kingdom?

No, the capital of United Kingdom is London, about 214 km away.

Sources & notes

Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.

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