Monroe County, Indiana
County seat: Bloomington · Population 143,345 (2025) · 395 sq mi
Monroe County is the 12th most populous of Indiana's 92 counties, with 143,345 people (2025 estimate). Its county seat is Bloomington. It is part of the South Central (Region 8) region, one of the 12 Indiana economic growth regions (DWD / WorkOne regions). The map shows its 3 cities and towns and the 6 neighboring counties.
Monroe County facts
- County seat
- Bloomington
- Population (2025 estimate)
- 143,345 +1.8% since 2020
- Land area
- 395 sq mi 49th largest of 92
- Water area
- 17 sq mi
- Population density
- 363 per sq mi
- Established
- 1818
- Named after
- James Monroe president of the United States from 1817 to 1825 (1758–1831)
- Largest city
- Bloomington 83,307
- Median household income
- $65,868
- Cities and towns
- 3 plus 3 CDPs
- ZIP codes
- 19
- Time zone
- Eastern
- FIPS code
- 18105
Cities and towns in Monroe County
Monroe County has 3 incorporated cities, towns and villages. Populations count the people living inside Monroe County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Bloomington (county seat) | City | 83,307 | |
| Ellettsville | Town | 6,840 | |
| Stinesville | Town | 197 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Smithville-Sanders | 3,299 | |
| Stanford | 472 | |
| Harrodsburg | 298 |
ZIP codes in Monroe County
19 ZIP codes reach into Monroe County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 46151 also Morgan and Johnson counties
- 47264 also Jackson and Lawrence counties
- 47401 also Brown County
- 47403 also Greene County
- 47404 also Owen County
- 47405
- 47406
- 47408
- 47421 also Lawrence County
- 47429
- 47433 also Owen and Morgan counties
- 47434
- 47436 also Lawrence County
- 47448 also Brown and Bartholomew counties
- 47458
- 47460 also Owen and Greene counties
- 47462 also Lawrence and Greene counties
- 47464
- 47468 also Brown County
Population of Monroe County, 2020–2025
Monroe County grew by 2,576 people (+1.8%) between April 2020 and July 2025: 694 more deaths than births and a net gain of 3,450 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 140,629 |
| 2021 | 144,658 |
| 2022 | 144,456 |
| 2023 | 143,548 |
| 2024 | 142,832 |
| 2025 | 143,345 |
Neighboring counties
- Brown County east · 15,777 people
- Lawrence County south · 45,568 people
- Owen County northwest · 21,886 people
- Morgan County north · 74,967 people
- Greene County west · 31,165 people
- Jackson County southeast · 47,370 people
Printable Monroe 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) (83 KB)
- PNG (2400 px) (66 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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