5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Bainbridge | 1 | 14,380 | 14,487 | -0.15% | 702 | 20.50 | City |
| Attapulgus | 2 | 442 | 454 | -0.45% | 555 | 0.80 | City |
| Climax | 3 | 267 | 274 | -0.37% | 333 | 0.80 | City |
| Brinson | 4 | 210 | 219 | -0.94% | 103 | 2.04 | Town |
| Faceville | 5 | 189 | 140 | 7.39% | 74 | 2.56 | CDP |
Bainbridge is the largest city in Decatur County, with a population of 14,380.
Faceville is the smallest city in Decatur County.
There are 5 cities in Decatur County, Georgia.