Clackamas County, Oregon

Clackamas County
Official seal of Clackamas County
Official logo of Clackamas County
Map of Oregon highlighting Clackamas County
Location within the U.S. state of Oregon
Map of the United States highlighting Oregon
Oregon's location within the U.S.
Coordinates: 45°11′N 122°13′W / 45.19°N 122.21°W / 45.19; -122.21
Country United States
State Oregon
FoundedJuly 5, 1843
Named forClackamas people
SeatOregon City
Largest cityLake Oswego
Area
 • Total1,883 sq mi (4,880 km2)
 • Land1,870 sq mi (4,800 km2)
 • Water13 sq mi (30 km2)  0.7%
Population
 (2020)
 • Total421,401
 • Estimate 
(2023)
423,173 Increase
 • Density220/sq mi (86/km2)
Time zoneUTC−8 (Pacific)
 • Summer (DST)UTC−7 (PDT)
Congressional districts3rd, 5th, 6th
Websitewww.clackamas.us
Map of Clackamas County
Map of Clackamas County

Clackamas County (/ˈklækəməs/ CLAK-ə-məss) is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the population was 421,401, making it Oregon's third-most populous county.[1] Its county seat is Oregon City.[2] The county was named after the native people living in the area at the time of the coming of Europeans, the Clackamas people, who are part of the Chinookan peoples.

Clackamas County is part of the Portland-Vancouver-Hillsboro, OR-WA Metropolitan Statistical Area. It is in the Willamette Valley.

  1. ^ "State & County QuickFacts". United States Census Bureau. Retrieved April 21, 2023.
  2. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.

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