6 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Sandersville | 1 | 5,359 | 5,782 | -1.29% | 426 | 13 | City |
| Davisboro | 2 | 2,001 | 1,836 | 1.42% | 656 | 3 | City |
| Tennille | 3 | 2,000 | 1,537 | 4% | 1,150 | 2 | City |
| Harrison | 4 | 317 | 338 | -0.94% | 186 | 2 | Town |
| Oconee | 5 | 180 | 189 | -0.55% | 159 | 1 | City |
| Riddleville | 6 | 77 | 82 | -1.28% | 101 | 1 | Town |
Sandersville is the largest city in Washington County, with a population of 5,359.
Riddleville is the smallest city in Washington County, with a population of 77.
There are 6 cities in Washington County, Georgia.