Clinton County, Indiana
County seat: Frankfort · Population 33,322 (2025) · 405 sq mi
Clinton County is the 50th most populous of Indiana's 92 counties, with 33,322 people (2025 estimate). Its county seat is Frankfort. 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 6 cities and towns and the 7 neighboring counties.
Clinton County facts
- County seat
- Frankfort
- Population (2025 estimate)
- 33,322 +0.4% since 2020
- Land area
- 405 sq mi 40th largest of 92
- Water area
- 0 sq mi
- Population density
- 82 per sq mi
- Established
- 1830
- Named after
- DeWitt Clinton American politician (1769–1828)
- Largest city
- Frankfort 16,837
- Median household income
- $65,019
- Cities and towns
- 6 plus 4 CDPs
- ZIP codes
- 12
- Time zone
- Eastern
- FIPS code
- 18023
Cities and towns in Clinton County
Clinton County has 6 incorporated cities, towns and villages. Populations count the people living inside Clinton County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Frankfort (county seat) | City | 16,837 | |
| Rossville | Town | 1,525 | |
| Mulberry | Town | 1,224 | |
| Kirklin | Town | 717 | |
| Colfax | Town | 714 | |
| Michigantown | Town | 430 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Forest | 259 | |
| Hillisburg | 194 | |
| Antioch | 129 | |
| Scircleville | 88 |
ZIP codes in Clinton County
12 ZIP codes reach into Clinton County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 46035 also Montgomery and Boone counties
- 46039
- 46041 also Carroll County
- 46049 also Tipton County
- 46050 also Boone, Tipton and Hamilton counties
- 46057
- 46058 also Tippecanoe County
- 46065 also Carroll County
- 46069 also Hamilton and Boone counties
- 46979 also Howard and Tipton counties
- 47905 also Tippecanoe and Carroll counties
- 47930 also Tippecanoe and Montgomery counties
Population of Clinton County, 2020–2025
Clinton County grew by 127 people (+0.4%) between April 2020 and July 2025: 165 more births than deaths and a net loss of 28 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 33,185 |
| 2021 | 32,994 |
| 2022 | 32,870 |
| 2023 | 33,091 |
| 2024 | 33,307 |
| 2025 | 33,322 |
Neighboring counties
- Boone County south · 80,689 people
- Carroll County north · 20,655 people
- Tippecanoe County west · 190,456 people
- Howard County northeast · 83,904 people
- Tipton County east · 15,319 people
- Montgomery County southwest · 38,954 people
- Hamilton County southeast · 387,036 people
Printable Clinton 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) (88 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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