Demographics of Williams County, Ohio

Williams County, Ohio had 36,549 people on July 1, 2025, by the Census Bureau’s estimate: −535 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Williams County, in four figures

36,549
Population: July 1, 2025, Vintage 2025 estimate.; −1.4%
Change since July 2020: −535 people.; 41.6 ±0.5
Median age: ACS 2020–⁠2024.; $61,048 ±$2,193
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Williams County, Ohio's population shrank 1.4% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Williams County, Ohio's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Williams County, Ohio's population shrank 1.4% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Williams County, Ohio's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	37,084	100.0	100.0
2021	36,792	99.2	100.2
2022	36,642	98.8	100.7
2023	36,626	98.8	101.6
2024	36,621	98.8	102.5
2025	36,549	98.6	103.1

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Population of Williams County, Ohio on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	37,084	−22	+21	0	−46
2021	36,792	−292	−79	+21	−253
2022	36,642	−150	−171	+51	−7
2023	36,626	−16	−37	+60	−29
2024	36,621	−5	−32	+86	−55
2025	36,549	−72	−24	0	−49

Age, 2020–2024

The median age is 41.6 ±0.5: for men 40.6 ±0.9 and for women 42.7 ±0.7. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Williams County by age, ACS 2020–2024
Age	People	Share	Ohio	United States
Under 5	2,125 ±83	5.8% ±0.2	5.7% ±<0.1	5.6% ±<0.1
5 to 17	5,959 ±363	16.2% ±1.0	16.3% ±0.1	16.3% ±<0.1
18 to 24	2,805 ±220	7.6% ±0.6	8.9% ±0.1	9.1% ±<0.1
25 to 44	9,021 ±364	24.6% ±1.0	25.7% ±0.1	26.9% ±<0.1
45 to 64	9,441 ±379	25.7% ±1.0	25.1% ±0.1	24.8% ±<0.1
65 and over	7,368 ±448	20.1% ±1.2	18.3% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $61,048 ±$2,193, and income per person $32,405 ±$1,618, in 2024 dollars. The median is $71,389 ±$321 in Ohio and $80,734 ±$166 in the United States.

Households by income

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Households in Williams County by income, ACS 2020–2024
Household income	Households	Share	Ohio	United States
Under $25,000	2,355 ±351	15.2% ±2.3	16.3% ±0.2	14.6% ±<0.1
$25,000 to $49,999	3,695 ±436	23.9% ±2.8	19.1% ±0.2	16.7% ±<0.1
$50,000 to $74,999	3,181 ±354	20.6% ±2.3	16.9% ±0.1	15.5% ±<0.1
$75,000 to $99,999	2,280 ±276	14.7% ±1.8	13.1% ±0.1	12.6% ±<0.1
$100,000 to $149,999	2,811 ±360	18.2% ±2.3	17.1% ±0.1	17.5% ±<0.1
$150,000 to $199,999	654 ±136	4.2% ±0.9	8.3% ±0.1	9.6% ±<0.1
$200,000 or more	500 ±118	3.2% ±0.8	9.1% ±0.1	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Williams County by age, ACS 2020–2024
Age	Below poverty	Rate	Ohio	United States
All ages	4,543 ±619	12.7% ±1.7	13.3% ±0.2	12.5% ±0.1
Under 18	1,533 ±294	19.4% ±3.5	17.8% ±0.3	16.1% ±0.1
18 to 59	2,183 ±380	12.1% ±2.1	12.7% ±0.2	11.6% ±0.1
60 and over	827 ±191	8.6% ±1.9	10.6% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Williams County, ACS 2020–2024
Measure	Williams County	Ohio	United States
Housing units	16,564 ±91	5,292,391 ±464	143,775,355 ±10,234
Occupied	93.4% ±1.3	91.9% ±0.2	89.9% ±0.1
Vacant	6.6% ±1.3	8.1% ±0.2	10.1% ±0.1
Owner occupied	76.3% ±2.3	67.2% ±0.3	65.2% ±0.3
Renter occupied	23.7% ±2.1	32.8% ±0.2	34.8% ±0.1
Median home value	$150,000 ±$6,500	$214,800 ±$742	$332,700 ±$236
Median gross rent	$791 ±$33	$1,034 ±$5	$1,413 ±$2
Median year built	1966 ±2	1970 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Williams County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Ohio	United States
Hispanic or Latino	1,982 ±0	5.4% ±<0.1	4.8% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	33,347 ±111	90.8% ±0.3	75.8% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	221 ±87	0.6% ±0.2	12.0% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	241 ±22	0.7% ±0.1	2.5% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 37	0% to 0.1%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 25	0% to 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 165	0% to 0.4%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	838 ±129	2.3% ±0.4	4.3% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Williams County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Ohio	United States
Born in the state	26,582 ±677	72.4% ±1.8	74.6% ±0.1	57.3% ±<0.1
Born in another state	9,385 ±634	25.6% ±1.7	19.2% ±0.1	26.9% ±<0.1
Born a citizen outside the states	254 ±109	0.7% ±0.3	1.0% ±<0.1	1.7% ±<0.1
Born abroad	498 ±155	1.4% ±0.4	5.2% ±0.1	14.1% ±<0.1
Naturalized citizens	223 ±91	0.6% ±0.2	2.8% ±<0.1	7.4% ±<0.1
Not citizens	126 to 424	0.3% to 1.2%	2.5% ±0.1	6.8% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Williams County among the counties of Ohio

67th of 88 by population, July 2025. Every one is listed on the Ohio page.

Counties of Ohio near Williams County in population, July 2025
County	July 2025	Change since 2020
Ottawa County	39,481	−2.0%
Champaign County	38,820	+0.2%
Guernsey County	38,379	−0.1%
Defiance County	38,292	+0.1%
Coshocton County	37,188	+1.6%
Williams County	36,549	−1.4%
Morrow County	36,305	+3.7%
Perry County	35,918	+1.3%
Putnam County	34,380	> −0.1%
Jackson County	32,817	+0.4%
Hardin County	30,072	−2.1%

Elsewhere on the site

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Data retrieved September 25, 2026