Cardiff Population 2026
Cardiff has a population of 372,089, making it the #10 biggest city in 🇬🇧 United Kingdom, located in Wales. Roughly 0.5% of United Kingdom's population lives here. It is about 24× smaller than London, the country's biggest city.
Population (city proper)
372,089
Rank in United Kingdom
#10
Coordinates
51.48°N, 3.18°W
~17 m elevation · Europe/London
Distance to capital (London)
211 km
131 miles, straight line
Other big cities in Wales
Cities near Cardiff
- Penarth23,437 people · ~5 km away
- Caerphilly31,060 people · ~11 km away
- Barry54,673 people · ~11 km away
- Risca20,443 people · ~15 km away
- Newport161,506 people · ~17 km away
- Pontypridd31,206 people · ~18 km away
FAQ
What is the population of Cardiff?
Cardiff has a population of 372,089 (city proper, latest official figure via GeoNames), making it the #10 biggest city in United Kingdom.
What region is Cardiff in?
Cardiff is located in Wales, United Kingdom.
Is Cardiff the capital of United Kingdom?
No, the capital of United Kingdom is London, about 211 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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