| Fountain Inn, SC (City) |
| Fountain Lake, AR (Town) |
| Fountain Prairie, MN (Township) |
| Fountain Prairie Town, WI (Town) |
| Fountain Run, KY (City) |
| Fountain Town, WI (Town) |
| Fountain Valley, CA (City) |
| Fountain-N-Lake, MO (Village) |
| Four Mile Township, IA (Township) |
| Four Mile Township, IL (Township) |
| Four Oaks, NC (Town) |
| Four Seasons, MO (Village) |
| Four Seasons at Crystal Springs Community Development District, FL (CDD) |
| Fourche, AR (Town) |
| Fowler, IN (Town) |
