8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Palm Coast | 1 | 110,981 | 89,721 | 3.98% | 1,160 | 96 | City |
| St. Augustine Beach | 2 | 6,801 | 6,836 | -0.1% | 3,194 | 2 | City |
| Flagler Beach | 3 | 5,669 | 5,161 | 1.81% | 1,599 | 4 | City |
| Butler Beach | 4 | 4,801 | 4,814 | -0.21% | 1,887 | 3 | CDP |
| Bunnell | 5 | 4,319 | 3,323 | 4.83% | 31 | 139 | City |
| Crescent Beach | 6 | 937 | 1,085 | 0% | 652 | 1 | CDP |
| Beverly Beach | 7 | 531 | 474 | 2.12% | 1,724 | 0 | Town |
| Marineland | 8 | 9 | 8 | 0% | 23 | 0 | Town |
Palm Coast is the largest city in Flagler County, with a population of 110,981.
Marineland is the smallest city in Flagler County, with a population of 9.
There are 8 cities in Flagler County, Florida.