Butler County, Ohio Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 7th-largest in Ohio
The population of Butler County, Ohio is 389,910 as of the 2023 American Community Survey, making it the 7th-largest county in Ohio. The median household income is $81,194, the median home value is $243,000, and the median age is 37.1.
The population of Butler County has grown 8.2% since 2010 (369,111 → 399,542), a +0.57% annualized rate.
389,910
Population
+0.57%
Annual growth
836
People / sq mi
$81,194
Median Income
$243,000
Median Home Value
Butler County covers 467 sq mi of land at 835.8 people per square mile.
About Butler County, OH
What distinguishes Butler County is density: among the most densely settled of US counties, around 836 people per square mile. With 389,910 residents, Butler County is a county in Ohio. That makes it one of the ten largest counties in Ohio in the country, at #7 by population.
The typical household earns $81,194 a year, near the US median of $78,538. The poverty rate is 7.6%, below the national 12.4%. The median home value is $243,000, with typical rent around $1,098.
Educational attainment is on the higher side for US counties — 32.5% of adults hold a four-year degree, below the national 35.0%. Remote work is on the higher side at 11.8%, below the national 14.0%, and the average commute runs about 25 minutes each way.
That density explains much of the rest of the profile in Butler County: denser places lean toward renting, shorter commutes by transit, and a younger working-age mix.
Butler County Population History (2010-2024)
The county of Butler County had a population of 369,111 in 2010 and 399,542 in 2024, a 8.2% growth over 14 years. The peak was 399,542 in 2024. Average annual growth rate: 0.57%.
399,542
Population (2024)
369,111
Population (2010)
399,542
Peak (2024)
0.57%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 369,111 |
| 2011 | 370,164 |
| 2012 | 370,628 |
| 2013 | 371,497 |
| 2014 | 373,877 |
| 2015 | 376,173 |
| 2016 | 378,527 |
| 2017 | 380,751 |
| 2018 | 382,114 |
| 2019 | 383,603 |
| 2020 | 390,887 |
| 2021 | 387,671 |
| 2022 | 390,689 |
| 2023 | 395,593 |
| 2024 | 399,542 |
Race & Ethnicity
| White | 77.9% |
| Black or African American | 8.3% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.8% |
| Two or More Races | 0.0% |
Age & Sex
37.1
Median Age
50.6%
Female
49.4%
Male
15.5%
Age 65+
Age Distribution
Children (under 15): 19.3% · Seniors (65+): 15.5%
Income & Poverty
| Median household income | $81,194+$11,514 vs state |
| Mean household income | $103,524 |
| Per-capita income | $39,425 |
| Poverty rate | 7.6%-1.6% vs state |
| Unemployment rate | 3.0% |
| Employment-to-population | 60.3% |
Top Industries by Employment
The largest employment sector in Butler County is professional & business services, accounting for 22.9% of workers.
How residents commute
0.3%
Drive alone
1.8%
Carpool
76.7%
Public transit
11.8%
Work from home
24.9 min
Avg commute
Housing
$243,000+$43,800 vs state
Median home value
$1,098
Median rent
69.9%
Homeownership rate
154,777
Total housing units
93.8%
Occupied
6.2%
Vacant
30.1%
Renter-occupied
Social & access
93.7%
With health insurance
95.0%
With broadband internet
21.8%
Foreign-born
6.1%
Veterans (18+)
11.8%
With a disability
89.8%
Speak language other than English at home
Education
91.2%
High School+
32.5%
Bachelor's+
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County rankings
Common questions about Butler County, OH
Frequently Asked Questions
Butler County, Ohio has a population of 389,910 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 7th-largest county in Ohio. Population density is 836 people per square mile.
The population of Butler County has grown 8.2% since 2010 (369,111 → 399,542), a +0.57% annualized rate.
The median household income in Butler County, Ohio is $81,194, with mean (average) household income of $103,524 and per-capita income of $39,425. 7.6% of residents live below the federal poverty level.
In Butler County, the largest racial and ethnic groups are White (77.9%), Black or African American (8.3%), Hispanic or Latino (0.8%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Butler County, Ohio is 37.1 years. Residents are 50.6% female and 49.4% male.
The median home value in Butler County is $243,000 and median monthly rent is $1,098. 69.9% of occupied housing units are owner-occupied. The county has 154,777 total housing units, 6.2% of which are vacant.
The largest employment sector in Butler County, Ohio is professional, scientific, and management services, employing 22.9% of workers. The unemployment rate is 3.0%.
Columbus is among the largest cities associated with Butler County, Ohio, with a population of 906,480.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.