- Kalida
- Kam Trailer Park
- Kanauga
- Kansas
- Kansas Corners
- Karen Woods
- Karlin
- Kauke
- Keenan Avenue Mobile Home Park
- Keene
- Keith
- Keller Farm
- Keller Farm East
- Keller Island
- Keller Pines
- Kellers Court
- Kelleys Island
- Kelloggsville
- Kemp
- Ken-mar Mobile Home Park
- Kenilworth
- Kenmore
- Kennard
- Kennedy Heights
- Kennonsburg
- Kennvale
- Keno
- Kenricksville
- Kenridge
- Kensington