| City | County | 2026 Pop. ↓ |
|---|---|---|
| Kissimmee | Osceola County | 86,894 |
| Kendall | Miami-Dade County | 79,255 |
| Kendale Lakes | Miami-Dade County | 51,216 |
| Kendall West | Miami-Dade County | 35,339 |
| Keystone | Hillsborough County | 27,342 |
| Key West | Monroe County | 24,809 |
| Key Biscayne | Miami-Dade County | 14,869 |
| Key Largo | Monroe County | 12,447 |
| Kathleen | Polk County | 6,572 |
| Kenneth City | Pinellas County | 4,840 |
| Kensington Park | Sarasota County | 3,483 |
| Keystone Heights | Clay County | 1,609 |
| Key Vista | Pasco County | 1,444 |
| Kenwood Estates | Palm Beach County | 1,431 |
| Key Colony Beach | Monroe County | 734 |