6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Americus | 1 | 15,370 | 16,202 | -1.07% | 1,354 | 11 | City |
| Webster County | 2 | 2,327 | 2,351 | -0.21% | 11 | 210 | Unified Government |
| Plains | 3 | 541 | 568 | -0.92% | 665 | 1 | City |
| Leslie | 4 | 335 | 340 | -0.3% | 189 | 2 | City |
| Andersonville | 5 | 232 | 237 | -0.43% | 168 | 1 | City |
| De Soto | 6 | 118 | 122 | -0.84% | 145 | 1 | City |
Americus is the largest city in Sumter County, with a population of 15,370.
De Soto is the smallest city in Sumter County, with a population of 118.
There are 6 cities in Sumter County, Georgia.