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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.

CitiesOttumwaPopulation

Population in Ottumwa

United States · Ottumwa profile

Population

24,624

people

World rank

#22869

of 33750

Percentile

32%

higher is better

Data quality

Measured

Total resident population.

Source: GeoNames · source data.

See full ranking About this metric Ottumwa profile

FAQ

Frequently asked

What is the population in Ottumwa?

Ottumwa has a population of 24,624 people. Total resident population.

How does Ottumwa rank for population?

Ottumwa ranks #22869 of 33750 cities for population (higher is better).