Data / Population / Hardin County

Population in Hardin County

Population in Hardin County was 3,588 in 2025, according to the U.S. Census Bureau. That is down 0.4% from 2024. That is the 102nd highest of 102 counties in 2025.

2025, persons3,588
Change on 2024-0.4%
Rank102nd of 102Counties in Illinois ranked
Series high3,6542020
Series low3,5882025

Population in Hardin County, 2020 to 2025

CSVChart (SVG)

3,5803,6003,6203,6403,6602020202120222023202420252020: 3,654 persons2021: 3,648 persons2022: 3,594 persons2023: 3,614 persons2024: 3,601 persons2025: 3,588 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
20253,588
20243,601
20233,614
20223,594
20213,648
20203,654

Compared with Illinois and United States

Place2025
Hardin County3,588
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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What is the latest population in Hardin County? Cite the source.
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Questions

What is the population in Hardin County?

Population in Hardin County was 3,588 in 2025, according to the U.S. Census Bureau. That is down 0.4% from 2024. That is the 102nd 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 Hardin County?

3,654 in 2020, the highest value since 2020 in this series.

More statistics for Hardin County

All statistics for Hardin County