- Kennedy
- Keowns
- Keshena Falls
- Ketchum Island
- Keyeser
- Keyesville
- Kieler
- Kilbournville
- Kimball
- King
- Kingsbridge
- Kingsford
- Kingsley Corners
- Kirby
- Kirchhayn
- Kirsch Island
- Kleps Island
- Klevenville
- Kline Island
- Klondike
- Klondike
- Kloten
- Kneeland
- Knellsville
- Knowles
- Knowlton
- Koch Island
- Koch Island
- Kodan
- Koepenick