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© 2026 STATLAS. Data under CC BY 4.0 from World Bank, GeoNames, Open-Meteo & others.

Indices labeled “modeled” are computed estimates — see methodology.

CitiesCardiffPopulation

Population in Cardiff

United Kingdom · Cardiff profile

Population

372,089

people

World rank

#1559

of 33750

Percentile

95%

higher is better

Data quality

Measured

Total resident population.

Source: GeoNames · source data.

See full ranking About this metric Cardiff profile

FAQ

Frequently asked

What is the population in Cardiff?

Cardiff has a population of 372,089 people. Total resident population.

How does Cardiff rank for population?

Cardiff ranks #1559 of 33750 cities for population (higher is better).