Data / Population / Champaign County

Population in Champaign County

Population in Champaign County was 38,820 in 2025, according to the U.S. Census Bureau. That is up 0.3% from 2024. That is the 63rd highest of 88 counties in 2025.

2025, persons38,820
Change on 2024+0.3%
Rank63rd of 88Counties in Ohio ranked
Series high38,8202025
Series low38,6752022

Population in Champaign County, 2020 to 2025

CSVChart (SVG)

38.7K38.7K38.8K38.8K38.9K2020202120222023202420252020: 38,741 persons2021: 38,788 persons2022: 38,675 persons2023: 38,750 persons2024: 38,717 persons2025: 38,820 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
202538,820
202438,717
202338,750
202238,675
202138,788
202038,741

Compared with Ohio and United States

Place2025
Champaign County38,820
Ohio11,900,510
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 Champaign County? Cite the source.
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Questions

What is the population in Champaign County?

Population in Champaign County was 38,820 in 2025, according to the U.S. Census Bureau. That is up 0.3% from 2024. That is the 63rd highest of 88 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 Champaign County?

38,820 in 2025, the highest value since 2020 in this series.

More statistics for Champaign County

All statistics for Champaign County