| Senecaville, OH (Village) |
| Seney Township, MI (Township) |
| Sennett, NY (Town) |
| Senoia, GA (City) |
| Sentinel, ND (Township) |
| Sentinel, OK (Town) |
| Sentinel Butte, ND (City) |
| Sequatchie County, TN (County) |
| Sequim, WA (City) |
| Sequoyah County, OK (County) |
| Serena Township, IL (Township) |
| Sergeant Bluff, IA (City) |
| Sergeant Township, PA (Township) |
| Sergius, ND (Township) |
| Sesser, IL (City) |
