| Sigel, IL (Town) |
| Sigel, MN (Township) |
| Sigel, WI (Town) |
| Sigel, WI (Town) |
| Sigel Township, MI (Township) |
| Sigel Township, IL (Township) |
| Signal, SD (Township) |
| Signal Hill, CA (City) |
| Signal Mountain, TN (Town) |
| Sigourney, IA (City) |
| Sigourney Township, IA (Township) |
| Sigurd, UT (Town) |
| Sikes, LA (Village) |
| Sikes, ND (Township) |
| Sikeston, MO (City) |
