Demographics of Defiance County, Ohio

Defiance County, Ohio had 38,292 people on July 1, 2025, by the Census Bureau’s estimate: +24 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.

Defiance County, in four figures

38,292
Population: July 1, 2025, Vintage 2025 estimate.; +0.1%
Change since July 2020: +24 people.; 41.1 ±0.7
Median age: ACS 2020–⁠2024.; $73,064 ±$4,002
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.

Defiance County, Ohio's population grew 0.1% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Defiance 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

Defiance County, Ohio's population grew 0.1% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Defiance 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	38,268	100.0	100.0
2021	38,177	99.8	100.2
2022	38,139	99.7	100.7
2023	38,301	100.1	101.6
2024	38,333	100.2	102.5
2025	38,292	100.1	103.1

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Population of Defiance 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	38,268	−20	+13	0	−35
2021	38,177	−91	−129	+29	−15
2022	38,139	−38	−81	+100	−39
2023	38,301	+162	−72	+135	+107
2024	38,333	+32	−31	+30	+38
2025	38,292	−41	−20	−3	−19

Age, 2020–2024

The median age is 41.1 ±0.7: for men 39.1 ±1.0 and for women 42.5 ±0.8. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Defiance County by age, ACS 2020–2024
Age	People	Share	Ohio	United States
Under 5	2,219 ±137	5.8% ±0.4	5.7% ±<0.1	5.6% ±<0.1
5 to 17	6,407 ±400	16.7% ±1.0	16.3% ±0.1	16.3% ±<0.1
18 to 24	3,316 ±372	8.6% ±1.0	8.9% ±0.1	9.1% ±<0.1
25 to 44	9,372 ±463	24.4% ±1.2	25.7% ±0.1	26.9% ±<0.1
45 to 64	9,288 ±409	24.2% ±1.1	25.1% ±0.1	24.8% ±<0.1
65 and over	7,741 ±488	20.2% ±1.3	18.3% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $73,064 ±$4,002, and income per person $35,589 ±$2,142, 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 Defiance County by income, ACS 2020–2024
Household income	Households	Share	Ohio	United States
Under $25,000	2,059 ±330	13.4% ±2.1	16.3% ±0.2	14.6% ±<0.1
$25,000 to $49,999	3,021 ±418	19.7% ±2.7	19.1% ±0.2	16.7% ±<0.1
$50,000 to $74,999	2,757 ±361	18.0% ±2.3	16.9% ±0.1	15.5% ±<0.1
$75,000 to $99,999	2,438 ±298	15.9% ±1.9	13.1% ±0.1	12.6% ±<0.1
$100,000 to $149,999	3,121 ±401	20.4% ±2.6	17.1% ±0.1	17.5% ±<0.1
$150,000 to $199,999	1,341 ±229	8.7% ±1.5	8.3% ±0.1	9.6% ±<0.1
$200,000 or more	590 ±151	3.8% ±1.0	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 Defiance County by age, ACS 2020–2024
Age	Below poverty	Rate	Ohio	United States
All ages	3,949 ±760	10.5% ±2.0	13.3% ±0.2	12.5% ±0.1
Under 18	973 ±290	11.4% ±3.3	17.8% ±0.3	16.1% ±0.1
18 to 59	2,089 ±441	11.0% ±2.3	12.7% ±0.2	11.6% ±0.1
60 and over	887 ±225	8.7% ±2.2	10.6% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Defiance County, ACS 2020–2024
Measure	Defiance County	Ohio	United States
Housing units	16,565 ±63	5,292,391 ±464	143,775,355 ±10,234
Occupied	92.5% ±1.4	91.9% ±0.2	89.9% ±0.1
Vacant	7.5% ±1.3	8.1% ±0.2	10.1% ±0.1
Owner occupied	79.3% ±2.3	67.2% ±0.3	65.2% ±0.3
Renter occupied	20.7% ±2.0	32.8% ±0.2	34.8% ±0.1
Median home value	$163,200 ±$5,953	$214,800 ±$742	$332,700 ±$236
Median gross rent	$846 ±$56	$1,034 ±$5	$1,413 ±$2
Median year built	1968 ±3	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 Defiance County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Ohio	United States
Hispanic or Latino	4,270 ±0	11.1% ±<0.1	4.8% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	32,495 ±101	84.7% ±0.3	75.8% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	619 ±182	1.6% ±0.5	12.0% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	43 to 135	0.1% to 0.4%	2.5% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	9 to 55	< 0.1% to 0.1%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 76	0% to 0.2%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 42	0% to 0.1%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	794 ±200	2.1% ±0.5	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 Defiance County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Ohio	United States
Born in the state	29,406 ±884	76.7% ±2.3	74.6% ±0.1	57.3% ±<0.1
Born in another state	8,385 ±860	21.9% ±2.2	19.2% ±0.1	26.9% ±<0.1
Born a citizen outside the states	83 to 293	0.2% to 0.8%	1.0% ±<0.1	1.7% ±<0.1
Born abroad	184 to 544	0.5% to 1.4%	5.2% ±0.1	14.1% ±<0.1
Naturalized citizens	171 ±83	0.4% ±0.2	2.8% ±<0.1	7.4% ±<0.1
Not citizens	56 to 330	0.1% to 0.9%	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%.

Defiance County among the counties of Ohio

65th of 88 by population, July 2025. Every one is listed on the Ohio page.

Counties of Ohio near Defiance County in population, July 2025
County	July 2025	Change since 2020
Fulton County	41,853	−1.9%
Preble County	40,664	−0.8%
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%

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