- Jack
- Jacket
- Jackson
- Jackson Mill
- Jacksonville
- Jacksonville
- Jacobs
- Jadwin
- Jaegers Shop
- Jake Prairie
- James Brothers
- Jameson
- Jameson Island
- Jamesport
- Jamestown
- Jamesville
- Jane
- Jane Downing Island
- Japan
- Jarvis
- Jasper
- Jaudon
- Jaywye
- Jedburgh
- Jeddo
- Jeff
- Jeff Vander Lou
- Jefferson Barracks
- Jefferson City
- Jefferson Heights