- Janesville
- Janney
- Japan
- Jarrettown
- Jeansville
- Jednota
- Jefferis
- Jefferson
- Jefferson
- Jefferson
- Jefferson Center
- Jefferson Hills
- Jefferson Junction
- Jefferson West
- Jeffersonville
- Jeffries
- Jenkins Corner
- Jenks
- Jenners
- Jenners Crossroads
- Jennersville
- Jenningsville
- Jericho
- Jericho
- Jericho Mills
- Jerkwater
- Jerome Junction
- Jerrehian Estates
- Jersey Mills
- Jewell