Jennings County, Indiana
County seat: Vernon · Population 27,622 (2025) · 377 sq mi
Jennings County is the 58th most populous of Indiana's 92 counties, with 27,622 people (2025 estimate). Its county seat is Vernon. It is part of the Southeast (Region 9) region, one of the 12 Indiana economic growth regions (DWD / WorkOne regions). The map shows its 2 cities and towns and the 6 neighboring counties.
Jennings County facts
- County seat
- Vernon
- Population (2025 estimate)
- 27,622 +0% since 2020
- Land area
- 377 sq mi 60th largest of 92
- Water area
- 2 sq mi
- Population density
- 73 per sq mi
- Established
- 1816
- Named after
- Jonathan Jennings American politician (1784-1834)
- Largest city
- North Vernon 6,559
- Median household income
- $69,322
- Cities and towns
- 2 plus 7 CDPs
- ZIP codes
- 13
- Time zone
- Eastern
- FIPS code
- 18079
Cities and towns in Jennings County
Jennings County has 2 incorporated cities, towns and villages. Populations count the people living inside Jennings County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| North Vernon | City | 6,559 | |
| Vernon (county seat) | Town | 232 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Country Squire Lakes | 3,057 | |
| Hayden | 288 | |
| Scipio | 246 | |
| Butlerville | 231 | |
| Commiskey | 139 | |
| Grayford | 124 | |
| Paris Crossing | 59 |
ZIP codes in Jennings County
13 ZIP codes reach into Jennings County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 47037 also Ripley County
- 47223
- 47227 also Jefferson County
- 47229 also Jackson County
- 47230 also Jefferson and Scott counties
- 47231 also Jefferson County
- 47232 also Bartholomew County
- 47265 also Decatur County
- 47270 also Jefferson County
- 47273 also Bartholomew County
- 47274 also Jackson, Bartholomew and Brown counties
- 47282
- 47283 also Decatur and Bartholomew counties
Population of Jennings County, 2020–2025
Jennings County grew by 5 people (+0%) between April 2020 and July 2025: 107 more deaths than births and a net gain of 113 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 27,587 |
| 2021 | 27,510 |
| 2022 | 27,467 |
| 2023 | 27,630 |
| 2024 | 27,724 |
| 2025 | 27,622 |
Neighboring counties
- Jefferson County southeast · 33,279 people
- Ripley County east · 29,434 people
- Jackson County west · 47,370 people
- Decatur County north · 26,576 people
- Scott County south · 25,053 people
- Bartholomew County northwest · 85,729 people
Printable Jennings 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) (94 KB)
- PNG (2400 px) (79 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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