| Jewett City, CT (Borough) |
| Jim Hogg County, TX (County) |
| Jim River Valley, ND (Township) |
| Jim Thorpe, PA (Borough) |
| Jim Wells County, TX (County) |
| Jo Daviess, MN (Township) |
| Jo Daviess County, IL (County) |
| Joaquin, TX (City) |
| Johannisburg Township, IL (Township) |
| John Day, OR (City) |
| Johns Creek, GA (City) |
| Johns Township, IA (Township) |
| Johnsburg, IL (Village) |
| Johnsburg, NY (Town) |
| Johnson, OK (Town) |
