Warren County, Indiana
County seat: Williamsport · Population 8,474 (2025) · 365 sq mi
Warren County is the 90th most populous of Indiana's 92 counties, with 8,474 people (2025 estimate). Its county seat is Williamsport. It is part of the West Central (Region 4) region, one of the 12 Indiana economic growth regions (DWD / WorkOne regions). The map shows its 4 cities and towns and the 5 neighboring counties.
Warren County facts
- County seat
- Williamsport
- Population (2025 estimate)
- 8,474 +0.5% since 2020
- Land area
- 365 sq mi 67th largest of 92
- Water area
- 2 sq mi
- Population density
- 23 per sq mi
- Established
- 1827
- Named after
- Joseph Warren American doctor (1741-1775)
- Largest city
- Williamsport 1,954
- Median household income
- $82,425
- Cities and towns
- 4 plus 10 CDPs
- ZIP codes
- 11
- Time zone
- Eastern
- FIPS code
- 18171
Cities and towns in Warren County
Warren County has 4 incorporated cities, towns and villages. Populations count the people living inside Warren County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Williamsport (county seat) | Town | 1,954 | |
| West Lebanon | Town | 685 | |
| Pine Village | Town | 214 | |
| State Line City | Town | 122 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Green Hill | 234 | |
| Judyville | 118 | |
| Foster | 100 | |
| Kramer | 64 | |
| Marshfield | 62 | |
| Independence | 20 | |
| Hedrick | 10 | |
| Rainsville | 6 | |
| Pence | 0 | |
| Tab | 0 |
ZIP codes in Warren County
11 ZIP codes reach into Warren County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 47906 also Tippecanoe and White counties
- 47917 also Benton County
- 47918 also Fountain and Tippecanoe counties
- 47921 also Benton County
- 47932 also Fountain and Vermillion counties
- 47944 also Benton and White counties
- 47970 also Benton, Tippecanoe and White counties
- 47975 also Benton County
- 47982
- 47991
- 47993
Population of Warren County, 2020–2025
Warren County grew by 38 people (+0.5%) between April 2020 and July 2025: 128 more deaths than births and a net gain of 169 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 8,425 |
| 2021 | 8,449 |
| 2022 | 8,472 |
| 2023 | 8,497 |
| 2024 | 8,467 |
| 2025 | 8,474 |
Neighboring counties
- Fountain County southeast · 17,013 people
- Benton County north · 8,883 people
- Vermilion County, Illinois southwest · 71,259 people
- Vermillion County south · 15,488 people
- Tippecanoe County east · 190,456 people
Printable Warren 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) (80 KB)
- PNG (2400 px) (71 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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