| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Washington | 1 | 13,195 | 12,045 | 1.57% | 1,978 | 7 | City |
| Odon | 2 | 1,376 | 1,388 | -0.15% | 1,481 | 1 | Town |
| Montgomery | 3 | 781 | 788 | -0.13% | 483 | 2 | Town |
| Elnora | 4 | 626 | 632 | -0.16% | 641 | 1 | Town |
| Plainville | 5 | 484 | 490 | -0.21% | 1,403 | 0 | Town |
| Cannelburg | 6 | 173 | 175 | -0.57% | 836 | 0 | Town |
| Alfordsville | 7 | 66 | 66 | 0% | 1,000 | 0 | Town |
Washington is the largest city in Daviess County, with a population of 13,195.
Alfordsville is the smallest city in Daviess County, with a population of 66.
There are 7 cities in Daviess County, Indiana.