Brown County, Indiana
County seat: Nashville · Population 15,777 (2025) · 312 sq mi
Brown County is the 79th most populous of Indiana's 92 counties, with 15,777 people (2025 estimate). Its county seat is Nashville. It is part of the South Central (Region 8) region, one of the 12 Indiana economic growth regions (DWD / WorkOne regions). The map shows its 1 city or town and the 5 neighboring counties.
Brown County facts
- County seat
- Nashville
- Population (2025 estimate)
- 15,777 +2% since 2020
- Land area
- 312 sq mi 76th largest of 92
- Water area
- 5 sq mi
- Population density
- 51 per sq mi
- Established
- 1836
- Named after
- Jacob Brown American general in the War of 1812
- Largest city
- Nashville 1,273
- Median household income
- $78,528
- Cities and towns
- 1 plus 2 CDPs
- ZIP codes
- 10
- Time zone
- Eastern
- FIPS code
- 18013
Cities and towns in Brown County
Brown County has 1 incorporated place. 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 |
|---|---|---|---|
| Nashville (county seat) | Town | 1,273 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Cordry Sweetwater Lakes | 1,190 | |
| Helmsburg | 387 |
ZIP codes in Brown County
10 ZIP codes reach into Brown County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 46160 also Morgan and Johnson counties
- 46164 also Johnson County
- 46181 also Johnson County
- 47201 also Bartholomew County
- 47235 also Jackson County
- 47274 also Jackson, Bartholomew and Jennings counties
- 47401 also Monroe County
- 47435
- 47448 also Monroe and Bartholomew counties
- 47468 also Monroe County
Population of Brown County, 2020–2025
Brown County grew by 305 people (+2%) between April 2020 and July 2025: 502 more deaths than births and a net gain of 817 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 15,481 |
| 2021 | 15,578 |
| 2022 | 15,586 |
| 2023 | 15,643 |
| 2024 | 15,621 |
| 2025 | 15,777 |
Neighboring counties
- Monroe County west · 143,345 people
- Bartholomew County east · 85,729 people
- Jackson County southeast · 47,370 people
- Johnson County north · 174,262 people
- Morgan County northwest · 74,967 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) (72 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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