| St Marys, GA (City) |
| St Marys, KS (City) |
| St Marys, ND (Township) |
| St Marys, KS (Township) |
| St Marys County, MD (County) |
| St Mathias, MN (Township) |
| St Matthews, KY (City) |
| St Matthews, SC (Town) |
| St Michael, MN (City) |
| St Michaels, MD (Town) |
| St Nazianz, WI (Village) |
| St Olaf, MN (Township) |
| St Olaf, IA (City) |
| St Onge, SD (Township) |
| St Paul, VA (Town) |
