Clermont County, Ohio Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 14th-largest in Ohio
The population of Clermont County, Ohio is 209,862 as of the 2023 American Community Survey, making it the 14th-largest county in Ohio. The median household income is $83,178, the median home value is $245,600, and the median age is 40.8.
The population of Clermont County has grown 8.4% since 2010 (197,613 → 214,123), a +0.57% annualized rate.
209,862
Population
+0.57%
Annual growth
464
People / sq mi
$83,178
Median Income
$245,600
Median Home Value
Clermont County covers 453 sq mi of land at 463.7 people per square mile.
About Clermont County, OH
Clermont County stands apart on settlement density — it is among the most densely settled of US counties, at roughly 464 people per square mile. With 209,862 residents, Clermont County is a county in Ohio. It ranks #14 among counties in Ohio by population.
Households take in a median $83,178, comfortably above the US median of $78,538. Only 5.9% of residents live in poverty, below the national 12.4%. The median home value is $245,600, with typical rent around $1,040.
About 31.4% of adults 25 and older have a bachelor’s degree, below the 35.0% national figure. About 12.3% of workers primarily work from home, below the national 14.0%, and the average commute runs about 28 minutes each way.
That density explains much of the rest of the profile in Clermont County: denser places lean toward renting, shorter commutes by transit, and a younger working-age mix.
Clermont County Population History (2010-2024)
The county of Clermont County had a population of 197,613 in 2010 and 214,123 in 2024, a 8.4% growth over 14 years. The peak was 214,123 in 2024. Average annual growth rate: 0.57%.
214,123
Population (2024)
197,613
Population (2010)
214,123
Peak (2024)
0.57%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 197,613 |
| 2011 | 198,886 |
| 2012 | 199,526 |
| 2013 | 200,504 |
| 2014 | 201,516 |
| 2015 | 202,077 |
| 2016 | 203,332 |
| 2017 | 204,456 |
| 2018 | 205,803 |
| 2019 | 206,851 |
| 2020 | 208,755 |
| 2021 | 209,919 |
| 2022 | 210,906 |
| 2023 | 212,202 |
| 2024 | 214,123 |
Race & Ethnicity
| White | 92.4% |
| Black or African American | 1.5% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.8% |
| Two or More Races | 0.0% |
Age & Sex
40.8
Median Age
50.4%
Female
49.6%
Male
17.8%
Age 65+
Age Distribution
Children (under 15): 18.2% · Seniors (65+): 17.8%
Income & Poverty
| Median household income | $83,178+$13,498 vs state |
| Mean household income | $107,049 |
| Per-capita income | $43,473 |
| Poverty rate | 5.9%-3.3% vs state |
| Unemployment rate | 2.7% |
| Employment-to-population | 62.3% |
Top Industries by Employment
The largest employment sector in Clermont County is professional & business services, accounting for 20.8% of workers.
How residents commute
0.2%
Drive alone
0.7%
Carpool
78.4%
Public transit
12.3%
Work from home
28.1 min
Avg commute
Housing
$245,600+$46,400 vs state
Median home value
$1,040
Median rent
73.4%
Homeownership rate
87,534
Total housing units
96.3%
Occupied
3.7%
Vacant
26.6%
Renter-occupied
Social & access
94.3%
With health insurance
95.2%
With broadband internet
23.4%
Foreign-born
7.3%
Veterans (18+)
14.3%
With a disability
96.9%
Speak language other than English at home
Education
91.9%
High School+
31.4%
Bachelor's+
Largest cities in Ohio
Other counties in Ohio
Part of Ohio
Metro areas in Ohio
County rankings
Frequently Asked Questions
Clermont County, Ohio has a population of 209,862 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 14th-largest county in Ohio. Population density is 464 people per square mile.
The population of Clermont County has grown 8.4% since 2010 (197,613 → 214,123), a +0.57% annualized rate.
The median household income in Clermont County, Ohio is $83,178, with mean (average) household income of $107,049 and per-capita income of $43,473. 5.9% of residents live below the federal poverty level.
In Clermont County, the largest racial and ethnic groups are White (92.4%), Black or African American (1.5%), 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 Clermont County, Ohio is 40.8 years. Residents are 50.4% female and 49.6% male.
The median home value in Clermont County is $245,600 and median monthly rent is $1,040. 73.4% of occupied housing units are owner-occupied. The county has 87,534 total housing units, 3.7% of which are vacant.
The largest employment sector in Clermont County, Ohio is professional, scientific, and management services, employing 20.8% of workers. The unemployment rate is 2.7%.
Columbus is among the largest cities associated with Clermont County, Ohio, with a population of 906,480.
Clermont County, OH Climate
Clermont County, OH has an average annual temperature of 11.6°C (53°F) and receives about 1103 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
11.6°C
Avg Temp
1103
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -2° / 29° | 71 mm |
| February | 0° / 33° | 71 mm |
| March | 6° / 42° | 105 mm |
| April | 11° / 52° | 102 mm |
| May | 17° / 62° | 118 mm |
| June | 21° / 70° | 96 mm |
| July | 24° / 74° | 110 mm |
| August | 23° / 73° | 98 mm |
| September | 19° / 66° | 86 mm |
| October | 13° / 55° | 73 mm |
| November | 7° / 44° | 90 mm |
| December | 1° / 34° | 83 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Clermont County, OH
The most comfortable months to visit Clermont County, OH are typically June, September and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 30°C high). The coldest is January (near -6°C low). May is usually the wettest month.
Where to stay near Clermont County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.