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Clackamas County, Oregon

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Clackamas County /ˈklækəməs/ is a county in the U.S. state of Oregon. As of the 2010 United States Census, the population was 375,992.[1] It is Oregon's third-most populous county. Its county seat is Oregon City.[2]


  1. "State & County QuickFacts". US Census Bureau. Retrieved November 14, 2013. 
  2. "Find a County". National Association of Counties. Archived from the original on 31 May 2011. Retrieved June 7, 2011.