- Kremlin
- Kings Point
- Kalispell
- Kerr
- Kevin
- Kicking Horse
- Klein
- Knife River
- Keiley
- Kelley
- Kelly Island
- Kelly Island
- Kenilworth
- Kens Trailer Court
- Kenspur
- Kerns
- Kershaw
- Keystone
- Kidd
- Kila
- Kilby Butte Colony
- King Arthur Park
- King Colony Ranch
- King Island
- Kingley
- Kingrey Place
- Kingsbury Colony
- Kingston
- Kins Island (historical)
- Kinsey