Data / Population / Mills County

Population in Mills County

Population in Mills County was 14,793 in 2025, according to the U.S. Census Bureau. That is up 0.3% from 2024. That is the 52nd highest of 99 counties in 2025.

2025, persons14,793
Change on 2024+0.3%
Rank52nd of 99Counties in Iowa ranked
Series high14,7932025
Series low14,4132020

Population in Mills County, 2020 to 2025

CSVChart (SVG)

14.4K14.5K14.6K14.7K14.8K2020202120222023202420252020: 14,413 persons2021: 14,489 persons2022: 14,557 persons2023: 14,619 persons2024: 14,748 persons2025: 14,793 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
202514,793
202414,748
202314,619
202214,557
202114,489
202014,413

Compared with Iowa and United States

Place2025
Mills County14,793
Iowa3,238,387
United States341,784,857

Rankings

Definition

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). United States: Census Bureau population estimates for 1 July. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A. The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

How to cite

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

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What is the latest population in Mills County? Cite the source.
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Questions

What is the population in Mills County?

Population in Mills County was 14,793 in 2025, according to the U.S. Census Bureau. That is up 0.3% from 2024. That is the 52nd highest of 99 counties in 2025.

Where does this figure come from?

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). Retrieved by Invokely on 2026-10-08.

What was the highest population in Mills County?

14,793 in 2025, the highest value since 2020 in this series.

More statistics for Mills County

All statistics for Mills County