- Jacks Mountain
- Jefferson Hills
- Jewell
- Josephtown
- Jackson Mills
- Jerkwater
- Juniata Crossing
- Jackson Meadows
- Jacksonwald
- Jalappa
- Joanna Furnace
- Joanna Heights
- Juniata
- Juniata Gap
- Jacksonville
- Jamison
- Janney
- Johnsville
- Jugtown
- Jacksville
- Jamisonville
- Jefferson Center
- Jamestown
- Jericho
- Jamestown
- Jonesville
- Junedale
- Jacksonville
- Jerrehian Estates
- Jefferson