Hardin County, Ohio Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 72nd-largest in Ohio
The population of Hardin County, Ohio is 30,527 as of the 2023 American Community Survey, making it the 72nd-largest county in Ohio. The median household income is $58,001, the median home value is $134,800, and the median age is 35.3.
The population of Hardin County has declined 5.4% since 2010 (32,126 → 30,402), a -0.39% annualized rate.
30,527
Population
-0.39%
Annual growth
65
People / sq mi
$58,001
Median Income
$134,800
Median Home Value
Hardin County covers 470 sq mi of land at 64.9 people per square mile.
About Hardin County, OH
Age is the most distinctive thing about Hardin County: a median age of 35.3, younger than the national median. With 30,527 residents, Hardin County is a county in Ohio.
Median household income is $58,001, below the US median of $78,538. Poverty runs at 11.4%, below the national 12.4%. Housing is relatively affordable, with a median home value of $134,800, with typical rent around $733.
Degree attainment is mid-range for US counties: 18.9% of adults hold a four-year degree, below the national 35.0%. Remote work is on the lower side here, at 5.0%, below the national 14.0%, and the average commute runs about 24 minutes each way.
Hardin County Population History (2010-2024)
The county of Hardin County had a population of 32,126 in 2010 and 30,402 in 2024, a -5.4% growth over 14 years. The peak was 32,126 in 2010. Average annual growth rate: -0.39%.
30,402
Population (2024)
32,126
Population (2010)
32,126
Peak (2010)
-0.39%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 32,126 |
| 2011 | 31,805 |
| 2012 | 31,630 |
| 2013 | 31,743 |
| 2014 | 31,780 |
| 2015 | 31,615 |
| 2016 | 31,374 |
| 2017 | 31,338 |
| 2018 | 31,417 |
| 2019 | 31,369 |
| 2020 | 30,722 |
| 2021 | 30,444 |
| 2022 | 30,400 |
| 2023 | 30,406 |
| 2024 | 30,402 |
Race & Ethnicity
| White | 93.4% |
| Black or African American | 1.1% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.6% |
| Two or More Races | 0.0% |
Age & Sex
35.3
Median Age
50.4%
Female
49.6%
Male
16.0%
Age 65+
Age Distribution
Children (under 15): 19.3% · Seniors (65+): 16.0%
Income & Poverty
| Median household income | $58,001$-11,679 vs state |
| Mean household income | $74,502 |
| Per-capita income | $29,509 |
| Poverty rate | 11.4%+2.2% vs state |
| Unemployment rate | 2.5% |
| Employment-to-population | 58.1% |
Top Industries by Employment
The largest employment sector in Hardin County is manufacturing, accounting for 26.4% of workers.
How residents commute
0.0%
Drive alone
5.1%
Carpool
81.5%
Public transit
5.0%
Work from home
24.0 min
Avg commute
Housing
$134,800$-64,400 vs state
Median home value
$733
Median rent
73.3%
Homeownership rate
12,921
Total housing units
90.6%
Occupied
9.4%
Vacant
26.7%
Renter-occupied
Social & access
88.1%
With health insurance
91.6%
With broadband internet
14.2%
Foreign-born
7.3%
Veterans (18+)
13.2%
With a disability
94.0%
Speak language other than English at home
Education
91.7%
High School+
18.9%
Bachelor's+
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Part of Ohio
Metro areas in Ohio
County rankings
Frequently Asked Questions
Hardin County, Ohio has a population of 30,527 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 72nd-largest county in Ohio. Population density is 65 people per square mile.
The population of Hardin County has declined 5.4% since 2010 (32,126 → 30,402), a -0.39% annualized rate.
The median household income in Hardin County, Ohio is $58,001, with mean (average) household income of $74,502 and per-capita income of $29,509. 11.4% of residents live below the federal poverty level.
In Hardin County, the largest racial and ethnic groups are White (93.4%), Hispanic or Latino (1.6%), Black or African American (1.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Hardin County, Ohio is 35.3 years. Residents are 50.4% female and 49.6% male.
The median home value in Hardin County is $134,800 and median monthly rent is $733. 73.3% of occupied housing units are owner-occupied. The county has 12,921 total housing units, 9.4% of which are vacant.
The largest employment sector in Hardin County, Ohio is manufacturing, employing 26.4% of workers. The unemployment rate is 2.5%.
Columbus is among the largest cities associated with Hardin 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.