J
- Jacinto
- Jacksnipe
- Jackson
- Jacksonville
- Jacobs Corner
- Jacumba
- Jalama
- Jamacha
- Jamacha Junction
- Jamesan
- Jamesburg
- Jamestown
- Jamul
- Janes Place
- Janesville
- Jasmin
- Jayhawk
- Jellico
- Jenks Place
- Jenner
- Jenny Lind
- Jerome
- Jerseydale
- Jesmond Dene
- Jesus Maria
- Jet
- Jewell
- Jimgrey
- Jims Camp
- Jimtown
- Jofegan
- Johannesburg
- Johnson Corner
- Johnsondale
- Johnson Park
- Johnsons
- Johnston Corner
- Johnstonville
- Johnstown
- Johnsville
- Jolon
- Jonata Park
- Jones Corner
- Jones Place
- Jonesville
- Josephine
- Joshua
- Joshua Tree
- Jovista
- Julian
- Junction Camp
- Junction City
- Junction House
- Junction House
- Junction Ranch
- June Lake
- Juniper
- Juniper Hills
- Jupiter