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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.

CitiesJohnstownPopulation

Population in Johnstown

United States · Johnstown profile

Population

19,966

people

World rank

#27204

of 33750

Percentile

19%

higher is better

Data quality

Measured

Total resident population.

Source: GeoNames · source data.

See full ranking About this metric Johnstown profile

FAQ

Frequently asked

What is the population in Johnstown?

Johnstown has a population of 19,966 people. Total resident population.

How does Johnstown rank for population?

Johnstown ranks #27204 of 33750 cities for population (higher is better).