Data / Population / Williams County

Population in Williams County

Population in Williams County was 36,549 in 2025, according to the U.S. Census Bureau. That is down 0.2% from 2024. That is the 67th highest of 88 counties in 2025.

2025, persons36,549
Change on 2024-0.2%
Rank67th of 88Counties in Ohio ranked
Series high37,0842020
Series low36,5492025

Population in Williams County, 2020 to 2025

CSVChart (SVG)

36.4K36.6K36.8K37K37.2K2020202120222023202420252020: 37,084 persons2021: 36,792 persons2022: 36,642 persons2023: 36,626 persons2024: 36,621 persons2025: 36,549 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
202536,549
202436,621
202336,626
202236,642
202136,792
202037,084

Compared with Ohio and United States

Place2025
Williams County36,549
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 Williams County? Cite the source.
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Questions

What is the population in Williams County?

Population in Williams County was 36,549 in 2025, according to the U.S. Census Bureau. That is down 0.2% from 2024. That is the 67th 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 Williams County?

37,084 in 2020, the highest value since 2020 in this series.

More statistics for Williams County

All statistics for Williams County