- Kent Mill
- Kenwood Acres
- Kenyon Mobile Home Park
- Keri
- Kern
- Kern Mobile Estates
- Kerr City
- Kerr Island
- Kettle Hammock
- Kettle Island
- Keuka
- Kevan
- Key Biscayne
- Key Colony Beach
- Cayo Largo
- Key Largo
- Key Largo
- Key Largo Park
- Key Lois
- Key McLaughlin
- Key Vista
- Key West
- Key West Landings
- Key Who
- Key Woods Ranch
- Keys
- Keys at Harbour Island
- Keystone
- Keystone Acres
- Keystone Beach