Allen County, Ohio Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 26th-largest in Ohio
The population of Allen County, Ohio is 101,685 as of the 2023 American Community Survey, making it the 26th-largest county in Ohio. The median household income is $62,001, the median home value is $158,400, and the median age is 39.7.
The population of Allen County has declined 5.1% since 2010 (106,342 → 100,866), a -0.38% annualized rate.
101,685
Population
-0.38%
Annual growth
253
People / sq mi
$62,001
Median Income
$158,400
Median Home Value
Allen County covers 403 sq mi of land at 252.6 people per square mile.
About Allen County, OH
What distinguishes Allen County is density: among the most densely settled of US counties, around 253 people per square mile. Allen County is a county in Ohio with a population of 101,685. It ranks #26 among counties in Ohio by population.
Median household income is $62,001, below the US median of $78,538. Poverty runs at 9.8%, below the national 12.4%. Median home value is $158,400, with typical rent around $898.
Roughly 19.9% of adults have a bachelor’s, below the national 35.0%. Most workers commute: only 4.6% work from home, below the national 14.0%, and the average commute runs about 19 minutes each way.
That density explains much of the rest of the profile in Allen County: denser places lean toward renting, shorter commutes by transit, and a younger working-age mix.
Allen County Population History (2010-2024)
The county of Allen County had a population of 106,342 in 2010 and 100,866 in 2024, a -5.1% growth over 14 years. The peak was 106,342 in 2010. Average annual growth rate: -0.38%.
100,866
Population (2024)
106,342
Population (2010)
106,342
Peak (2010)
-0.38%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 106,342 |
| 2011 | 105,981 |
| 2012 | 105,251 |
| 2013 | 105,071 |
| 2014 | 104,886 |
| 2015 | 104,141 |
| 2016 | 103,691 |
| 2017 | 103,173 |
| 2018 | 102,747 |
| 2019 | 102,450 |
| 2020 | 102,137 |
| 2021 | 101,800 |
| 2022 | 101,086 |
| 2023 | 100,851 |
| 2024 | 100,866 |
Race & Ethnicity
| White | 80.9% |
| Black or African American | 10.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.7% |
| Two or More Races | 0.0% |
Age & Sex
39.7
Median Age
50.0%
Female
50.0%
Male
18.7%
Age 65+
Age Distribution
Children (under 15): 19.3% · Seniors (65+): 18.7%
Income & Poverty
| Median household income | $62,001$-7,679 vs state |
| Mean household income | $80,262 |
| Per-capita income | $33,382 |
| Poverty rate | 9.8%+0.6% vs state |
| Unemployment rate | 3.6% |
| Employment-to-population | 57.4% |
Top Industries by Employment
The largest employment sector in Allen County is professional & business services, accounting for 22.9% of workers.
How residents commute
0.5%
Drive alone
1.4%
Carpool
83.4%
Public transit
4.6%
Work from home
18.8 min
Avg commute
Housing
$158,400$-40,800 vs state
Median home value
$898
Median rent
68.3%
Homeownership rate
44,697
Total housing units
91.6%
Occupied
8.4%
Vacant
31.7%
Renter-occupied
Social & access
93.7%
With health insurance
92.5%
With broadband internet
16.3%
Foreign-born
7.7%
Veterans (18+)
15.9%
With a disability
97.3%
Speak language other than English at home
Education
92.4%
High School+
19.9%
Bachelor's+
Largest cities in Ohio
Other counties in Ohio
Part of Ohio
Metro areas in Ohio
County rankings
Frequently Asked Questions
Allen County, Ohio has a population of 101,685 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 26th-largest county in Ohio. Population density is 253 people per square mile.
The population of Allen County has declined 5.1% since 2010 (106,342 → 100,866), a -0.38% annualized rate.
The median household income in Allen County, Ohio is $62,001, with mean (average) household income of $80,262 and per-capita income of $33,382. 9.8% of residents live below the federal poverty level.
In Allen County, the largest racial and ethnic groups are White (80.9%), Black or African American (10.6%), Hispanic or Latino (1.7%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Allen County, Ohio is 39.7 years. Residents are 50.0% female and 50.0% male.
The median home value in Allen County is $158,400 and median monthly rent is $898. 68.3% of occupied housing units are owner-occupied. The county has 44,697 total housing units, 8.4% of which are vacant.
The largest employment sector in Allen County, Ohio is professional, scientific, and management services, employing 22.9% of workers. The unemployment rate is 3.6%.
Columbus is among the largest cities associated with Allen County, Ohio, with a population of 906,480.
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Statewide data for Ohio
Population, race, income, age, and trends across Ohio
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.