| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Glennville | 1 | 4,985 | 5,282 | -0.76% | 707 | 7 | City |
| Reidsville | 2 | 2,586 | 2,518 | 0.39% | 342 | 8 | City |
| Collins | 3 | 545 | 542 | 0% | 534 | 1 | City |
| Cobbtown | 4 | 344 | 344 | 0% | 514 | 1 | City |
| Manassas | 5 | 62 | 60 | 0% | 80 | 1 | City |
Glennville is the largest city in Tattnall County, with a population of 4,985.
Manassas is the smallest city in Tattnall County, with a population of 62.
There are 5 cities in Tattnall County, Georgia.