- Kidley
- Kilpatricks Mobile Home Park
- Kimberleigh
- Kinchester Lane Subdivision
- King
- King Acres
- King Island
- Kingdom
- Kingman
- Kings
- Kings
- Kings Island
- Kings Mill
- Kings Park
- Kingsport Court
- Kingston
- Kingstone Hills
- Kinswept Subdivision
- Kirksville
- Kisch
- Kise Crossing
- Kishwaukee
- Kishwaukee Glen
- Kittredge
- Klines Corner
- Klondike
- Klondike
- Knapp
- Knapps Island
- Knob Hill