| Jud, ND (City) |
| Judith Basin County, MT (County) |
| Judith Gap, MT (Town) |
| Judson, ND (Township) |
| Judson, MN (Township) |
| Judsonia, AR (City) |
| Julesburg, CO (Town) |
| Juliaetta, ID (City) |
| Julian, NE (Village) |
| Julington Creek Plantation Community Development District, FL (CDD) |
| Jump River Town, WI (Town) |
| Jumpertown, MS (Town) |
| Junction, UT (Town) |
| Junction, TX (City) |
| Junction, KS (Township) |
