County Maps US

Harrison County, Ohio

A county in Ohio, ranked 85 of 88 by population.

CountyFIPS 39067

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

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Population
14,070
-428 (-3.0%) since 2020
Land area
402.3
square miles. A further 2.1% of the total area is water
Population density
35.0
people per square mile, computed rather than published
County seat
Cadiz
Seat of county government.
Established
1813
212 years ago
Largest city
Cadiz village
Population 2,960.

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 Harrison 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 Harrison 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 800 by 627 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 Harrison 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
Population14,07085th of 882,157th of 3,144
Land area402.3 sq mi77th of 882,512th of 3,144
Population density35.0 per sq mi85th of 881,796th of 3,144
Median household income$54,41484th of 882,508th of 3,143

Full data for Harrison County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population14,070Vintage 2025 Population Estimates
Population in 202014,498Vintage 2025 Population Estimates
2020 estimates base?14,492Vintage 2025 Population Estimates
Land area402.3 sq mi2025 Gazetteer Files
Water area8.4 sq mi2025 Gazetteer Files
Total area410.8 sq mi2025 Gazetteer Files
Population density?35.0 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$54,414American Community Survey 2020-2024 5-Year Estimates
Median home value$121,500American Community Survey 2020-2024 5-Year Estimates
Median age45.5American Community Survey 2020-2024 5-Year Estimates
Households5,948American Community Survey 2020-2024 5-Year Estimates
Housing units7,383American 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
-84
141 births, 225 deaths
Net migration
+55
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 5 areas bordering Harrison 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
Jefferson CountyOhio23 mi63,597
Belmont CountyOhio19 mi64,434
Tuscarawas CountyOhio18 mi92,373
Carroll CountyOhio18 mi26,475
Guernsey CountyOhio8.9 mi38,379

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.