De Amerikaanse staat Oregon is onderverdeeld in 36 county's.
400px|right|thumb|County's van Oregon
CountyInwonersU.S. Census Bureau: Annual Estimates of the Population for Counties: April 1, 2000 to July 1, 20071 juli 2007HoofdplaatsInwonersU.S. Census Bureau: Population Estimates for All Places: 2000 to 20071 juli 2007Baker15.924Baker City9408Benton81.428Corvallis51.125Clackamas376.251Oregon City31.086Clatsop37.364Astoria9879Columbia48.996St. Helens12.347Coos63.505Coquille4161Crook22.906Prineville10.075Curry21.767Gold Beach1846Deschutes154.028Bend74.563Douglas104.119Roseburg20.906Gilliam1690Condon655Grant6904Canyon City558Harney6767Burns2684Hood River21.296Hood River6736Jackson199.295Medford72.186Jefferson20.687Madras5424Josephine81.056Grants Pass33.171Klamath66.512Klamath Falls19.662Lake7277Lakeview2345Lane343.591Eugene149.004Lincoln45.866Newport9852Linn113.264Albany47.239Malheur31.135Vale1901Marion311.449Salem151.913Morrow11.199Heppner1371Multnomah701.986Portland550.396Polk75.265Dallas15.478Sherman1677Moro285Tillamook25.038Tillamook4511Umatilla73.491Pendleton16.477Union24.753La Grande12.527Wallowa6759Enterprise1718Wasco23.762The Dalles11.935Washington522.514Hillsboro91.436Wheeler1361Fossil396Yamhill96.573McMinnville30.899
Oregon