| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Rincon | 1 | 11,904 | 11,021 | 1.52% | 1,221 | 10 | City |
| Springfield | 2 | 3,476 | 2,706 | 3.95% | 867 | 4 | City |
| Guyton | 3 | 3,423 | 2,355 | 5.42% | 886 | 4 | City |
Rincon is the largest city in Effingham County, with a population of 11,904.
Guyton is the smallest city in Effingham County, with a population of 3,423.
There are 3 cities in Effingham County, Georgia.