| Southwest City, MO (City) |
| Southwest Greensburg, PA (Borough) |
| Southwest Harbor, ME (Town) |
| Southwest Madison, PA (Township) |
| Southwest Ranches , FL (Town) |
| Southwest Township, IL (Township) |
| Southwick, MA (Town) |
| Spade, NE (Township) |
| Spafford, NY (Town) |
| Spalding, MN (Township) |
| Spalding, NE (Village) |
| Spalding County, GA (County) |
| Spalding Township, MI (Township) |
| Spang, MN (Township) |
| Spangle, WA (City) |
