- Jacinto
- Jackass Cone
- Jacksnipe
- Jackson
- Jacobs Corner
- Jacumba
- Jacumba Hot Springs
- Jakes Island
- Jalama
- Jamacha
- Jamacha Junction
- James
- Jamesan
- Jamesburg
- Jamestown
- Jamul
- Jamul Indian Village
- Janes Place
- Janesville
- Jasmin
- Jastro
- Java
- Jayhawk
- Jellico
- Jenks Place
- Jenner
- Jenny Lind
- Jerome
- Jersey Island
- Jerseydale