3 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Salem | 1 | 6,416 | 6,556 | -0.36% | 1,519 | 4 | City |
| Campbellsburg | 2 | 542 | 533 | 0.37% | 546 | 1 | Town |
| Little York | 3 | 192 | 189 | 0.52% | 196 | 1 | Town |
Salem is the largest city in Washington County, with a population of 6,416.
Little York is the smallest city in Washington County, with a population of 192.
There are 3 cities in Washington County, Indiana.