| Sykeston, ND (Township) |
| Sykesville, MD (Town) |
| Sykesville, PA (Borough) |
| Sylacauga, AL (City) |
| Sylva, NC (Town) |
| Sylvan, MN (Township) |
| Sylvan, WI (Town) |
| Sylvan Beach, NY (Village) |
| Sylvan Grove, KS (City) |
| Sylvan Lake, MI (City) |
| Sylvan Springs, AL (Town) |
| Sylvan Township, MI (Township) |
| Sylvan Township, MI (Township) |
| Sylvania, PA (Borough) |
| Sylvania, OH (City) |
