- Kolb
- Kunesh
- Kloten
- Keller Island
- Keyeser
- Kegonsa
- Kingsley Corners
- Klevenville
- Kirsch Island
- Koch Island
- Koch Island
- Kopf Island
- Kolberg
- Ketchum Island
- Kimball
- Kiel
- Kimberly
- Kohler
- Kendall
- Kingston
- Koshkonong Manor
- Koshkonong Mounds
- Kroghville
- Kelly
- Klondike
- Kodan
- Krok
- Koepenick
- Kayville Mobile Home Park
- Kellners Corners