| St. John, IN (Township) |
| St. John The Baptist Parish, LA (County) |
| St. Johns, MI (City) |
| St. Johns County, FL (County) |
| St. Johns Forest Community Development District, FL (CDD) |
| St. Joseph, IN (Township) |
| St. Joseph, MI (City) |
| St. Joseph Township, MI (Township) |
| St. Joseph Township, OH (Township) |
| St. Landry Parish, LA (County) |
| St. Lawrence, PA (Borough) |
| St. Leo , FL (Town) |
| St. Louis, MI (City) |
| St. Lucie County, FL (County) |
| St. Lucie Village, FL (Town) |
