| Swoyersville, PA (Borough) |
| Sycamore, OH (Village) |
| Sycamore, GA (City) |
| Sycamore, KS (Township) |
| Sycamore, KY (City) |
| Sycamore, SC (Town) |
| Sycamore, KS (Township) |
| Sycamore, IL (City) |
| Sycamore Hills, MO (Village) |
| Sycamore Township, OH (Township) |
| Sycamore Township, OH (Township) |
| Sycamore Township, IL (Township) |
| Sydna, ND (Township) |
| Sydney, ND (Township) |
| Sykeston, ND (City) |
