3 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Rincon | 1 | 12,025 | 11,022 | 1.7% | 1,234 | 9.75 | City |
| Springfield | 2 | 3,670 | 2,705 | 5.55% | 1,047 | 3.50 | City |
| Guyton | 3 | 3,314 | 2,341 | 6.25% | 970 | 3.42 | City |
Rincon is the largest city in Effingham County, with a population of 12,025.
Guyton is the smallest city in Effingham County.
There are 3 cities in Effingham County, Georgia.