8 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Forest Park | 1 | 19,062 | 19,778 | -0.62% | 2,067 | 9 | City |
| Riverdale | 2 | 14,373 | 15,011 | -0.73% | 3,274 | 4 | City |
| College Park | 3 | 13,976 | 13,907 | 0.09% | 1,252 | 11 | City |
| Lovejoy | 4 | 13,782 | 10,271 | 4.43% | 4,741 | 3 | City |
| Jonesboro | 5 | 6,145 | 5,961 | 0.51% | 2,054 | 3 | City |
| Morrow | 6 | 6,113 | 6,560 | -1.2% | 1,751 | 3 | City |
| Lake City | 7 | 2,855 | 2,957 | -0.59% | 1,540 | 2 | City |
| Woolsey | 8 | 210 | 206 | 0.48% | 257 | 1 | Town |
Forest Park is the largest city in Clayton County, with a population of 19,062.
Woolsey is the smallest city in Clayton County, with a population of 210.
There are 8 cities in Clayton County, Georgia.