County Maps US

Clermont County, Ohio

A county in Ohio, ranked 14 of 88 by population.

CountyFIPS 39025

Within Ohio
Clermont County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Batavia, the county seat, located via the 2025 Census Gazetteer.

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Population
216,977
+8,226 (+3.9%) since 2020
Land area
452.6
square miles. A further 1.7% of the total area is water
Population density
479
people per square mile, computed rather than published
County seat
Batavia
Seat of county government.
Established
1800
225 years ago
Largest city
Milford city
Population 6,412 for the whole place, which extends beyond this county.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Clermont County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Clermont County, Ohio from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 452 by 800 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Clermont County ranks

Position among the 88 counties of Ohio, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn OhioNationally
Population216,97714th of 88333rd of 3,144
Land area452.6 sq mi42nd of 882,261st of 3,144
Population density479 per sq mi14th of 88288th of 3,144
Median household income$85,5109th of 88409th of 3,143

Full data for Clermont County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population216,977Vintage 2025 Population Estimates
Population in 2020208,751Vintage 2025 Population Estimates
2020 estimates base?208,597Vintage 2025 Population Estimates
Land area452.6 sq mi2025 Gazetteer Files
Water area7.7 sq mi2025 Gazetteer Files
Total area460.2 sq mi2025 Gazetteer Files
Population density?479 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$85,510American Community Survey 2020-2024 5-Year Estimates
Median home value$266,200American Community Survey 2020-2024 5-Year Estimates
Median age40.8American Community Survey 2020-2024 5-Year Estimates
Households84,955American Community Survey 2020-2024 5-Year Estimates
Housing units88,470American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
+182
2,261 births, 2,079 deaths
Net migration
+2,493
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 7 areas bordering Clermont County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Brown CountyOhio33 mi44,397
Hamilton CountyOhio22 mi838,418
Warren CountyOhio14 mi257,181
Campbell CountyKentucky12 mi95,441
Bracken CountyKentucky11 mi8,511
Pendleton CountyKentucky3.3 mi14,800
Clinton CountyOhio0.9 mi42,301

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 88 counties of Ohio

Open the interactive Ohio county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.