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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.

CitiesAltadenaPopulation

Population in Altadena

United States · Altadena profile

Population

42,777

people

World rank

#13975

of 33750

Percentile

59%

higher is better

Data quality

Measured

Total resident population.

Source: GeoNames · source data.

See full ranking About this metric Altadena profile

FAQ

Frequently asked

What is the population in Altadena?

Altadena has a population of 42,777 people. Total resident population.

How does Altadena rank for population?

Altadena ranks #13975 of 33750 cities for population (higher is better).