| City | State | County |
|---|---|---|
| Portland | AL | Dallas |
| Portland | AR | Ashley |
| Portland | CO | Ouray |
| Portland | CO | Fremont |
| Portland | CT | Middlesex |
| Portland | FL | Walton |
| Portland | GA | Polk |
| Portland | IA | CerroGordo |
| Portland | IL | Whiteside |
| Portland | IN | Jay |
| Portland | KS | Sumner |
| Portland | KY | Adair |
| Portland | KY | Pendleton |
| Portland | KY | Jefferson |
| Portland | ME | Cumberland |
| Portland | MI | Ionia |
| Portland | MO | Callaway |
| Portland | ND | Traill |
| Portland | NY | Tompkins |
| Portland | NY | Chautauqua |
| Portland | OH | Meigs |
| Portland | OR | Clackamas |
| Portland | OR | Multnomah |
| Portland | OR | Washington |
| Portland | PA | Northampton |
| Portland | TN | Sumner |
| Portland | TX | SanPatricio |
| Portland | WI | Monroe |
| Portland | WI | Jefferson |