Data / Population / De Witt County

Population in De Witt County

Population in De Witt County was 15,118 in 2025, according to the U.S. Census Bureau. That is down 0.8% from 2024. That is the 70th highest of 102 counties in 2025.

2025, persons15,118
Change on 2024-0.8%
Rank70th of 102Counties in Illinois ranked
Series high15,4502020
Series low15,1182025

Population in De Witt County, 2020 to 2025

CSVChart (SVG)

15.1K15.2K15.3K15.4K15.5K2020202120222023202420252020: 15,450 persons2021: 15,398 persons2022: 15,327 persons2023: 15,297 persons2024: 15,244 persons2025: 15,118 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
202515,118
202415,244
202315,297
202215,327
202115,398
202015,450

Compared with Illinois and United States

Place2025
De Witt County15,118
Illinois12,719,141
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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Questions

What is the population in De Witt County?

Population in De Witt County was 15,118 in 2025, according to the U.S. Census Bureau. That is down 0.8% from 2024. That is the 70th highest of 102 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 De Witt County?

15,450 in 2020, the highest value since 2020 in this series.

More statistics for De Witt County

All statistics for De Witt County