- Knox
- Knoxville
- Kenilworth
- Kingston
- Kane
- Karns City
- Kenhorst
- Kennett Square
- King of Prussia
- Kistler
- Kittanning
- Klingerstown
- Koppel
- Kratzerville
- Kreamer
- Kulpmont
- Kulpsville
- Kutztown
- K O Junction
- Kahkhout Mountain
- Kahletown
- Kaiserville
- Kalreda Woods
- Kammerer
- Kanesholm
- Kaneville
- Kantner
- Kanty
- Kantz
- Kantz Corners