- Kalinke
- Kansasville
- Katinka Village
- Kaukauna
- Kayville Mobile Home Park
- Keene
- Keenville
- Kegonsa
- Keith Island
- Kekoskee
- Keller Island
- Kellner
- Kellners Corners
- Kellnersville
- Kelly
- Kelly
- Kelly Brook
- Kempster
- Kendall
- Kennan
- Kennedy
- Kenosha
- Keowns
- Keshena
- Keshena Falls
- Ketchum Island
- Kewaskum
- Kewaunee
- Keyeser
- Keyesville