- Kintersburg
- Kahletown
- Kellerville
- Knousetown
- Krause
- Keyser Valley
- Kenwick Village
- Kinderhook
- Kirks Mills
- Kissell Hill
- Klinesville
- Kennedy Mill
- Kane
- Karns City
- Kenhorst
- Kennett Square
- King of Prussia
- Kistler
- Kittanning
- Klingerstown
- Koppel
- Kratzerville
- Kreamer
- Kulpmont
- Kulpsville
- Kutztown
- Kutztown
- Kernsville
- Kline Island
- Krassdale