Jackson County, Indiana
County seat: Brownstown · Population 47,370 (2025) · 510 sq mi
Jackson County is the 31st most populous of Indiana's 92 counties, with 47,370 people (2025 estimate). Its county seat is Brownstown. It is part of the Southeast (Region 9) region, one of the 12 Indiana economic growth regions (DWD / WorkOne regions). The map shows its 4 cities and towns and the 7 neighboring counties.
Jackson County facts
- County seat
- Brownstown
- Population (2025 estimate)
- 47,370 +2% since 2020
- Land area
- 510 sq mi 8th largest of 92
- Water area
- 4 sq mi
- Population density
- 93 per sq mi
- Established
- 1816
- Named after
- Andrew Jackson president of the United States from 1829 to 1837
- Largest city
- Seymour 22,450
- Median household income
- $70,262
- Cities and towns
- 4 plus 5 CDPs
- ZIP codes
- 8
- Time zone
- Eastern
- FIPS code
- 18071
Cities and towns in Jackson County
Jackson County has 4 incorporated cities, towns and villages. Populations count the people living inside Jackson County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Seymour | City | 22,450 | |
| Brownstown (county seat) | Town | 3,154 | |
| Crothersville | Town | 1,506 | |
| Medora | Town | 641 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Rockford | 761 | |
| Vallonia | 411 | |
| Freetown | 277 | |
| Reddington | 199 | |
| Cortland | 28 |
ZIP codes in Jackson County
8 ZIP codes reach into Jackson County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 47102 also Scott County
- 47220
- 47229 also Jennings County
- 47235 also Brown County
- 47260 also Lawrence County
- 47264 also Lawrence and Monroe counties
- 47274 also Bartholomew, Jennings and Brown counties
- 47281 also Washington County
Population of Jackson County, 2020–2025
Jackson County grew by 944 people (+2%) between April 2020 and July 2025: 481 more births than deaths and a net gain of 466 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 46,468 |
| 2021 | 46,215 |
| 2022 | 46,298 |
| 2023 | 46,751 |
| 2024 | 47,436 |
| 2025 | 47,370 |
Neighboring counties
- Washington County south · 28,383 people
- Bartholomew County north · 85,729 people
- Jennings County east · 27,622 people
- Lawrence County west · 45,568 people
- Brown County northwest · 15,777 people
- Scott County southeast · 25,053 people
- Monroe County northwest · 143,345 people
Printable Jackson 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) (104 KB)
- PNG (2400 px) (79 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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