- Kilkare Woods
- Kilowatt
- Kimball
- Kimball Island
- Kincaid
- King City
- King Farms
- King Island
- King Salmon
- Kings Beach
- Kings Island
- Kingsburg
- Kingswood Estates
- Kingvale
- Kinneloa Mesa
- Kinyon
- Kirkville
- Kirkwood
- Kirkwood
- Kiska
- Kismet
- Kister
- Kit Carson
- Kiva Beach
- Klamath
- Klamath Glen
- Klamath River
- Klamath River
- Klau
- Klinefelter