Harrison County, Ohio
County seat: Cadiz · Population 14,070 (2025) · 402 sq mi
Harrison County is the 85th most populous of Ohio's 88 counties, with 14,070 people (2025 estimate). Its county seat is Cadiz. The map shows its 10 cities and towns and the 5 neighboring counties.
Harrison County facts
- County seat
- Cadiz
- Population (2025 estimate)
- 14,070 −2.9% since 2020
- Land area
- 402 sq mi 77th largest of 88
- Water area
- 8 sq mi
- Population density
- 35 per sq mi
- Established
- 1813
- Named after
- William Henry Harrison president of the United States in 1841 (1773-1841)
- Largest city
- Cadiz 2,960
- Median household income
- $54,414
- Cities and towns
- 10 plus 1 CDPs
- ZIP codes
- 17
- Time zone
- Eastern
- FIPS code
- 39067
Cities and towns in Harrison County
Harrison County has 10 incorporated cities, towns and villages. Populations count the people living inside Harrison County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Cadiz (county seat) | Village | 2,960 | |
| Hopedale | Village | 892 | |
| Scio | Village | 649 | |
| Jewett | Village | 534 | |
| Bowerston | Village | 349 | |
| Freeport | Village | 314 | |
| New Athens | Village | 214 | |
| Harrisville | Village | 175 | |
| Adena | Village | 121 | Jefferson County |
| Deersville | Village | 63 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Tippecanoe | 144 |
ZIP codes in Harrison County
17 ZIP codes reach into Harrison County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 43901 also Jefferson and Belmont counties
- 43907 also Jefferson County
- 43910 also Jefferson County
- 43950 also Belmont County
- 43973 also Guernsey and Tuscarawas counties
- 43974
- 43976
- 43977 also Belmont County
- 43981
- 43983 also Belmont and Guernsey counties
- 43986 also Carroll County
- 43988 also Carroll County
- 44621 also Tuscarawas and Carroll counties
- 44683 also Tuscarawas County
- 44693
- 44695 also Carroll County
- 44699 also Tuscarawas County
Population of Harrison County, 2020–2025
Harrison County shrank by 422 people (−2.9%) between April 2020 and July 2025: 437 more deaths than births and a net gain of 12 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 14,498 |
| 2021 | 14,473 |
| 2022 | 14,364 |
| 2023 | 14,237 |
| 2024 | 14,099 |
| 2025 | 14,070 |
Neighboring counties
- Jefferson County northeast · 63,597 people
- Belmont County south · 64,434 people
- Tuscarawas County northwest · 92,373 people
- Carroll County north · 26,475 people
- Guernsey County southwest · 38,379 people
Printable Harrison County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (91 KB)
- PNG (2400 px) (60 KB)
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Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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