Clay County, Indiana
County seat: Brazil · Population 26,410 (2025) · 358 sq mi
Clay County is the 60th most populous of Indiana's 92 counties, with 26,410 people (2025 estimate). Its county seat is Brazil. It is part of the Western (Region 7) region, one of the 12 Indiana economic growth regions (DWD / WorkOne regions). The map shows its 7 cities and towns and the 6 neighboring counties.
Clay County facts
- County seat
- Brazil
- Population (2025 estimate)
- 26,410 −0.2% since 2020
- Land area
- 358 sq mi 70th largest of 92
- Water area
- 3 sq mi
- Population density
- 74 per sq mi
- Established
- 1825
- Named after
- Henry Clay American politician from Kentucky (1777-1852)
- Largest city
- Brazil 8,343
- Median household income
- $70,010
- Cities and towns
- 7 plus 8 CDPs
- ZIP codes
- 18
- Time zone
- Eastern
- FIPS code
- 18021
Cities and towns in Clay County
Clay County has 7 incorporated cities, towns and villages. Populations count the people living inside Clay County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Brazil (county seat) | City | 8,343 | |
| Clay City | Town | 884 | |
| Knightsville | Town | 673 | |
| Harmony | Town | 668 | |
| Staunton | Town | 467 | |
| Carbon | Town | 251 | |
| Center Point | Town | 206 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Cloverland | 398 | |
| Saline City | 329 | |
| Coalmont | 297 | |
| Bowling Green | 207 | |
| Billtown | 177 | |
| Cory | 109 | |
| Middlebury | 109 | |
| Poland | 81 |
ZIP codes in Clay County
18 ZIP codes reach into Clay County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 46171 also Putnam County
- 47427 also Owen County
- 47438 also Greene and Sullivan counties
- 47802 also Vigo County
- 47833 also Owen County
- 47834 also Parke and Vigo counties
- 47837 also Parke County
- 47840 also Putnam County
- 47841 also Owen County
- 47845
- 47846
- 47853
- 47857
- 47858 also Vigo and Sullivan counties
- 47868 also Owen and Putnam counties
- 47874 also Parke and Vigo counties
- 47879 also Sullivan County
- 47881
Population of Clay County, 2020–2025
Clay County shrank by 49 people (−0.2%) between April 2020 and July 2025: 388 more deaths than births and a net gain of 342 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 26,426 |
| 2021 | 26,395 |
| 2022 | 26,370 |
| 2023 | 26,400 |
| 2024 | 26,352 |
| 2025 | 26,410 |
Neighboring counties
- Owen County east · 21,886 people
- Vigo County west · 106,512 people
- Putnam County northeast · 37,876 people
- Greene County south · 31,165 people
- Parke County north · 16,642 people
- Sullivan County southwest · 20,831 people
Printable Clay 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) (75 KB)
- PNG (2400 px) (64 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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