| Sitka, AK (City) |
| Sitka Township, KS (Township) |
| Sitka Borough, AK (County) |
| Six Mile, SC (Town) |
| Six Mile Creek Community Development District, FL (CDD) |
| Six Mile Grove, MN (Township) |
| Six Mile Township, IL (Township) |
| Skagen, MN (Township) |
| Skagit County, WA (County) |
| Skagway Borough, AK (County) |
| Skamania County, WA (County) |
| Skanawan Town, WI (Town) |
| Skandia, MN (Township) |
| Skandia, ND (Township) |
| Skandia Township, MI (Township) |
