| City | County | 2026 Pop. ↓ |
|---|---|---|
| Johns Creek | Forsyth County | 79,995 |
| Jefferson | Jackson County | 17,973 |
| Jesup | Wayne County | 10,409 |
| Jonesboro | Clayton County | 6,074 |
| Jackson | Butts County | 5,970 |
| Jasper | Pickens County | 5,694 |
| Jekyll Island | Glynn County | 1,327 |
| Jeffersonville | Twiggs County | 895 |
| Jenkinsburg | Butts County | 429 |
| Jersey | Walton County | 160 |
| Junction City | Talbot County | 139 |
| Jakin | Early County | 132 |
| Juliette | Monroe County | 127 |
| Jacksonville | Telfair County | 106 |