Washington County, Indiana
County seat: Salem · Population 28,383 (2025) · 514 sq mi
Washington County is the 57th most populous of Indiana's 92 counties, with 28,383 people (2025 estimate). Its county seat is Salem. It is part of the Southern (Region 10) region, one of the 12 Indiana economic growth regions (DWD / WorkOne regions). The map shows its 6 cities and towns and the 8 neighboring counties.
Washington County facts
- County seat
- Salem
- Population (2025 estimate)
- 28,383 +0.8% since 2020
- Land area
- 514 sq mi 7th largest of 92
- Water area
- 3 sq mi
- Population density
- 55 per sq mi
- Established
- 1814
- Named after
- George Washington Founding Father and first U.S. president (1732–1799)
- Largest city
- Salem 6,427
- Median household income
- $64,641
- Cities and towns
- 6 plus 4 CDPs
- ZIP codes
- 12
- Time zone
- Eastern
- FIPS code
- 18175
Cities and towns in Washington County
Washington County has 6 incorporated cities, towns and villages. Populations count the people living inside Washington County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Salem (county seat) | City | 6,427 | |
| New Pekin | Town | 1,378 | |
| Campbellsburg | Town | 539 | |
| Little York | Town | 198 | |
| Livonia | Town | 103 | |
| Saltillo | Town | 101 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Martinsburg | 233 | |
| Hardinsburg | 164 | |
| Canton | 148 | |
| Fredericksburg | 48 |
ZIP codes in Washington County
12 ZIP codes reach into Washington County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 47106 also Clark and Floyd counties
- 47108 also Orange County
- 47115 also Harrison County
- 47120 also Harrison County
- 47125 also Orange County
- 47126 also Clark County
- 47164 also Harrison and Floyd counties
- 47165 also Floyd and Clark counties
- 47167
- 47170 also Scott and Jefferson counties
- 47281 also Jackson County
- 47452 also Orange and Lawrence counties
Population of Washington County, 2020–2025
Washington County grew by 222 people (+0.8%) between April 2020 and July 2025: 324 more deaths than births and a net gain of 547 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 28,230 |
| 2021 | 28,125 |
| 2022 | 28,152 |
| 2023 | 28,185 |
| 2024 | 28,358 |
| 2025 | 28,383 |
Neighboring counties
- Jackson County north · 47,370 people
- Orange County west · 19,834 people
- Clark County east · 130,451 people
- Scott County east · 25,053 people
- Harrison County south · 40,437 people
- Lawrence County northwest · 45,568 people
- Crawford County southwest · 10,509 people
- Floyd County southeast · 82,153 people
Printable Washington 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) (104 KB)
- PNG (2400 px) (85 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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