| Clackamas County Oregon Cities/Towns - Beaver Creek, Canby, Estacada, Gladstone, Lake Oswego, Milwaukie, Molalla, Oak Grove, Oregon City (County Seat), Redland, Sandy, Tualatin, West Linn, Wilsonville |
![]() |
Your Ad Here Clackamas County is a county located in the U.S. state of Oregon. As of 2000, the population was 338,391. Its county seat is Oregon City. History The county was named after the Native Americans living in the area, the Clackamas Indians, who were part of the Chinookan people. ![]() |