Demographics of Butler County, Ohio

Butler County, Ohio had 400,128 people on July 1, 2025, by the Census Bureau’s estimate: +9,283 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.

Butler County, in four figures

400,128
Population: July 1, 2025, Vintage 2025 estimate.; +2.4%
Change since July 2020: +9,283 people.; 37.2 ±0.2
Median age: ACS 2020–⁠2024.; $81,590 ±$1,701
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.

Butler County, Ohio's population grew 2.4% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Butler 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

Butler County, Ohio's population grew 2.4% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Butler 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	390,845	100.0	100.0
2021	387,409	99.1	100.2
2022	390,108	99.8	100.7
2023	394,636	101.0	101.6
2024	397,781	101.8	102.5
2025	400,128	102.4	103.1

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Population of Butler 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	390,845	+500	+185	+24	+144
2021	387,409	−3,436	−156	+473	−3,670
2022	390,108	+2,699	+9	+2,071	+868
2023	394,636	+4,528	+559	+2,908	+1,129
2024	397,781	+3,145	+523	+3,476	−824
2025	400,128	+2,347	+527	+1,711	+82

Age, 2020–2024

The median age is 37.2 ±0.2: for men 36.3 ±0.2 and for women 38.2 ±0.3. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Butler County by age, ACS 2020–2024
Age	People	Share	Ohio	United States
Under 5	22,712 ±57	5.8% ±<0.1	5.7% ±<0.1	5.6% ±<0.1
5 to 17	69,060 ±1,485	17.6% ±0.4	16.3% ±0.1	16.3% ±<0.1
18 to 24	47,120 ±1,794	12.0% ±0.5	8.9% ±0.1	9.1% ±<0.1
25 to 44	95,650 ±1,494	24.3% ±0.4	25.7% ±0.1	26.9% ±<0.1
45 to 64	95,996 ±1,595	24.4% ±0.4	25.1% ±0.1	24.8% ±<0.1
65 and over	62,338 ±1,574	15.9% ±0.4	18.3% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $81,590 ±$1,701, and income per person $40,027 ±$705, 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 Butler County by income, ACS 2020–2024
Household income	Households	Share	Ohio	United States
Under $25,000	19,899 ±1,243	13.6% ±0.8	16.3% ±0.2	14.6% ±<0.1
$25,000 to $49,999	24,996 ±1,361	17.0% ±0.9	19.1% ±0.2	16.7% ±<0.1
$50,000 to $74,999	22,907 ±1,357	15.6% ±0.9	16.9% ±0.1	15.5% ±<0.1
$75,000 to $99,999	19,169 ±1,030	13.1% ±0.7	13.1% ±0.1	12.6% ±<0.1
$100,000 to $149,999	27,864 ±1,502	19.0% ±1.0	17.1% ±0.1	17.5% ±<0.1
$150,000 to $199,999	15,838 ±981	10.8% ±0.7	8.3% ±0.1	9.6% ±<0.1
$200,000 or more	16,149 ±974	11.0% ±0.7	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 Butler County by age, ACS 2020–2024
Age	Below poverty	Rate	Ohio	United States
All ages	45,007 ±2,575	11.8% ±0.7	13.3% ±0.2	12.5% ±0.1
Under 18	11,834 ±1,157	13.1% ±1.2	17.8% ±0.3	16.1% ±0.1
18 to 59	25,177 ±1,638	12.3% ±0.8	12.7% ±0.2	11.6% ±0.1
60 and over	7,996 ±763	9.3% ±0.9	10.6% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Butler County, ACS 2020–2024
Measure	Butler County	Ohio	United States
Housing units	155,372 ±225	5,292,391 ±464	143,775,355 ±10,234
Occupied	94.5% ±0.5	91.9% ±0.2	89.9% ±0.1
Vacant	5.5% ±0.5	8.1% ±0.2	10.1% ±0.1
Owner occupied	69.9% ±0.9	67.2% ±0.3	65.2% ±0.3
Renter occupied	30.1% ±1.0	32.8% ±0.2	34.8% ±0.1
Median home value	$258,500 ±$4,939	$214,800 ±$742	$332,700 ±$236
Median gross rent	$1,135 ±$19	$1,034 ±$5	$1,413 ±$2
Median year built	1979 ±1	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 Butler County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Ohio	United States
Hispanic or Latino	27,328 ±0	7.0% ±<0.1	4.8% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	293,022 ±1,279	74.6% ±0.3	75.8% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	32,433 ±1,128	8.3% ±0.3	12.0% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	16,962 ±750	4.3% ±0.2	2.5% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	150 ±72	< 0.1% ±<0.1	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	400 ±175	0.1% ±<0.1	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	1,803 ±626	0.5% ±0.2	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	20,778 ±1,706	5.3% ±0.4	4.3% ±0.1	4.3% ±<0.1

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 Butler County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Ohio	United States
Born in the state	272,850 ±2,615	69.4% ±0.7	74.6% ±0.1	57.3% ±<0.1
Born in another state	83,849 ±2,531	21.3% ±0.6	19.2% ±0.1	26.9% ±<0.1
Born a citizen outside the states	4,558 ±789	1.2% ±0.2	1.0% ±<0.1	1.7% ±<0.1
Born abroad	31,619 ±1,898	8.0% ±0.5	5.2% ±0.1	14.1% ±<0.1
Naturalized citizens	14,873 ±1,376	3.8% ±0.4	2.8% ±<0.1	7.4% ±<0.1
Not citizens	16,746 ±1,751	4.3% ±0.4	2.5% ±0.1	6.8% ±<0.1

Butler County among the counties of Ohio

7th of 88 by population, July 2025. Every one is listed on the Ohio page.

Counties of Ohio near Butler County in population, July 2025
County	July 2025	Change since 2020
Cuyahoga County	1,232,925	−2.4%
Hamilton County	838,418	+1.0%
Montgomery County	539,598	+0.5%
Summit County	538,376	−0.3%
Lucas County	423,347	−1.7%
Butler County	400,128	+2.4%
Stark County	373,771	−0.2%
Lorain County	323,219	+3.1%
Warren County	257,181	+5.7%
Delaware County	242,032	+12.5%
Lake County	232,217	−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