Brown County, Ohio
County seat: Georgetown · Population 44,397 (2025) · 490 sq mi
Brown County is the 55th most populous of Ohio's 88 counties, with 44,397 people (2025 estimate). Its county seat is Georgetown. The map shows its 9 cities and towns and the 6 neighboring counties.
Brown County facts
- County seat
- Georgetown
- Population (2025 estimate)
- 44,397 +1.6% since 2020
- Land area
- 490 sq mi 29th largest of 88
- Water area
- 3 sq mi
- Population density
- 91 per sq mi
- Established
- 1818
- Named after
- Jacob Brown American general in the War of 1812
- Largest city
- Georgetown 4,450
- Median household income
- $71,270
- Cities and towns
- 9 plus 3 CDPs
- ZIP codes
- 20
- Time zone
- Eastern
- FIPS code
- 39015
Cities and towns in Brown County
Brown County has 9 incorporated cities, towns and villages. Populations count the people living inside Brown County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Georgetown (county seat) | Village | 4,450 | |
| Mount Orab | Village | 4,418 | |
| Ripley | Village | 1,597 | |
| Aberdeen | Village | 1,551 | |
| Sardinia | Village | 1,101 | Highland County |
| Russellville | Village | 548 | |
| Hamersville | Village | 503 | |
| Fayetteville | Village | 318 | |
| Higginsport | Village | 219 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Lake Lorelei | 1,746 | |
| Lake Waynoka | 1,266 | |
| St. Martin | 171 |
ZIP codes in Brown County
20 ZIP codes reach into Brown County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 45101 also Adams County
- 45106 also Clermont County
- 45107 also Clinton, Warren and Clermont counties
- 45115
- 45118 also Highland and Clermont counties
- 45119
- 45120 also Clermont County
- 45121 also Clermont County
- 45130 also Clermont County
- 45131
- 45133 also Highland and Pike counties
- 45142 also Highland and Clinton counties
- 45144 also Adams County
- 45148 also Clinton County
- 45154 also Highland County
- 45167
- 45168
- 45171 also Highland County
- 45176 also Clermont County
- 45697 also Adams and Highland counties
Population of Brown County, 2020–2025
Brown County grew by 716 people (+1.6%) between April 2020 and July 2025: 760 more deaths than births and a net gain of 1,471 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 43,684 |
| 2021 | 43,685 |
| 2022 | 43,655 |
| 2023 | 43,771 |
| 2024 | 44,163 |
| 2025 | 44,397 |
Neighboring counties
- Clermont County northwest · 216,977 people
- Highland County northeast · 43,823 people
- Adams County east · 27,865 people
- Mason County, Kentucky south · 16,936 people
- Bracken County, Kentucky southwest · 8,511 people
- Clinton County north · 42,301 people
Printable Brown 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) (123 KB)
- PNG (2400 px) (118 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.
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