| Portland, PA (Borough) |
| Portland, SD (Township) |
| Portland, MI (City) |
| Portland Town, WI (Town) |
| Portland Town, WI (Town) |
| Portland Township, MI (Township) |
| Portland Township, IA (Township) |
| Portland Township, IA (Township) |
| Portland Township, IA (Township) |
| Portland Township, IL (Township) |
| Portofino Cove Community Development District, FL (CDD) |
| Portofino Isles Community Development District, FL (CDD) |
| Portofino Landings Community Development District, FL (CDD) |
| Portofino Shores Community Development District, FL (CDD) |
| Portofino Springs Community Development District, FL (CDD) |
