Gallia County, Ohio
County seat: Gallipolis · Population 29,072 (2025) · 467 sq mi
Gallia County is the 73rd most populous of Ohio's 88 counties, with 29,072 people (2025 estimate). Its county seat is Gallipolis. The map shows its 6 cities and towns and the 6 neighboring counties.
Gallia County facts
- County seat
- Gallipolis
- Population (2025 estimate)
- 29,072 −0.5% since 2020
- Land area
- 467 sq mi 35th largest of 88
- Water area
- 5 sq mi
- Population density
- 62 per sq mi
- Established
- 1803
- Named after
- Gaul historical region of Western Europe inhabited by Celtic tribes
- Largest city
- Gallipolis 3,318
- Median household income
- $56,830
- Cities and towns
- 6 plus 2 CDPs
- ZIP codes
- 12
- Time zone
- Eastern
- FIPS code
- 39053
Cities and towns in Gallia County
Gallia County has 6 incorporated cities, towns and villages. Populations count the people living inside Gallia County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Gallipolis (county seat) | Village | 3,318 | |
| Rio Grande | Village | 837 | |
| Crown City | Village | 419 | |
| Vinton | Village | 224 | |
| Cheshire | Village | 123 | |
| Thurman | Village | 87 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Bidwell | 904 | |
| Kanauga | 270 |
ZIP codes in Gallia County
12 ZIP codes reach into Gallia County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 45614
- 45620 also Meigs County
- 45623 also Lawrence County
- 45631
- 45656 also Jackson, Lawrence and Scioto counties
- 45658 also Lawrence County
- 45674
- 45678 also Lawrence County
- 45685 also Jackson County
- 45686 also Vinton and Meigs counties
- 45688 also Lawrence County
- 45760 also Meigs County
Population of Gallia County, 2020–2025
Gallia County shrank by 138 people (−0.5%) between April 2020 and July 2025: 392 more deaths than births and a net gain of 240 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 29,226 |
| 2021 | 29,203 |
| 2022 | 28,959 |
| 2023 | 28,941 |
| 2024 | 28,956 |
| 2025 | 29,072 |
Neighboring counties
- Mason County, West Virginia east · 24,707 people
- Lawrence County southwest · 55,710 people
- Jackson County northwest · 32,817 people
- Meigs County northeast · 21,587 people
- Vinton County north · 12,645 people
- Cabell County, West Virginia south · 91,183 people
Printable Gallia 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) (89 KB)
Paste this code to embed the map on your site:
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.
Back to the Ohio county map with all 88 counties. Found an error? Tell us.