Daftar kota di Oregon

"Oak Hills*" - Oakland - Oakridge - "Oatfield" - "O'Brien" - "Oceanside" - "Odell" - "Olene" - "Olney" - Ontario - "Ophir" - Oregon City - "Orenco"* - "Otis" - "Otter Rock" - "Owyhee" - "Oxbow"