12 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Cataula | 1 | 2,286 | 1,654 | 7.12% | 353 | 6 | CDP |
| Hamilton | 2 | 1,826 | 1,677 | 1.5% | 535 | 3 | City |
| Hamilton | 3 | 1,826 | 1,688 | 1.5% | 535 | 3 | City |
| Pine Mountain | 4 | 1,304 | 1,217 | 1.24% | 416 | 3 | Town |
| Pine Mountain | 5 | 1,304 | 1,224 | 1.24% | 416 | 3 | Town |
| Ellerslie | 6 | 1,296 | 1,273 | 7.11% | 521 | 2 | CDP |
| Antioch | 7 | 756 | 284 | 7.08% | 296 | 3 | CDP |
| Waverly Hall | 8 | 671 | 631 | 1.05% | 201 | 3 | Town |
| Waverly Hall | 9 | 671 | 635 | 1.05% | 201 | 3 | Town |
| Piney Grove | 10 | 476 | 691 | 7.21% | 174 | 3 | CDP |
| Shiloh | 11 | 435 | 402 | 1.4% | 199 | 2 | City |
| Shiloh | 12 | 435 | 405 | 1.4% | 199 | 2 | City |
Cataula is the largest city in Harris County, with a population of 2,286.
Shiloh is the smallest city in Harris County, with a population of 435.
There are 12 cities in Harris County, Georgia.