- Jackson
- Jacksonburg
- Jacksons Mills
- Jacksonville
- Jacksonville
- Jacobstown
- Jamesburg
- Jamesburg Gardens
- Jamesburg Park
- Janvier
- Jeffers Landing
- Jefferson
- Jenkins
- Jericho
- Jericho
- Jerseyville
- Jessups Mill
- Jobstown
- Johnny Sedge
- Johnson Place
- Johnsonburg
- Johnsontown
- Jonas Island
- Jones Island
- Jones Mill
- Jones Mill
- Jordantown
- Juliustown
- Jumbo
- Jutland