12 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Lineville | 1 | 2,485 | 2,482 | 0.04% | 257 | 9.67 | City |
| Ashland | 2 | 1,914 | 1,984 | -0.73% | 261 | 7.35 | Town |
| New Site | 3 | 764 | 773 | -0.26% | 77 | 9.87 | Town |
| Oak Grove | 4 | 614 | 558 | 1.82% | 333 | 1.84 | Town |
| Hollis Crossroads | 5 | 607 | 695 | 0% | 49 | 12.46 | CDP |
| Mignon | 6 | 530 | 771 | -8.62% | 265 | 2 | CDP |
| Millerville | 7 | 522 | 389 | 3.16% | 78 | 6.70 | CDP |
| Hollins | 8 | 390 | 967 | -2.5% | 33 | 11.85 | CDP |
| Waldo | 9 | 258 | 253 | 0.39% | 92 | 2.81 | Town |
| Hanover | 10 | 244 | 37 | 7.02% | 58 | 4.21 | CDP |
| Delta | 11 | 113 | 118 | -5.04% | 15 | 7.79 | CDP |
| Goldville | 12 | 57 | 54 | 1.79% | 58 | 0.99 | Town |
Lineville is the largest city in Clay County, with a population of 2,485.
Goldville is the smallest city in Clay County.
There are 12 cities in Clay County, Alabama.