Thurston County, Washington

Thurston County
Former Thurston County Courthouse
Official logo of Thurston County
Map of Washington highlighting Thurston County
Location within the U.S. state of Washington
Map of the United States highlighting Washington
Washington's location within the U.S.
Coordinates: 46°56′N 122°50′W / 46.93°N 122.83°W / 46.93; -122.83
Country United States
State Washington
FoundedJanuary 12, 1852
Named forSamuel Thurston
SeatOlympia
Largest cityLacey
Area
 • Total774 sq mi (2,000 km2)
 • Land722 sq mi (1,870 km2)
 • Water52 sq mi (130 km2)  6.7%
Population
 • Total294,793
 • Estimate 
(2023)[1]
299,003 Increase
 • Density408/sq mi (158/km2)
Time zoneUTC−8 (Pacific)
 • Summer (DST)UTC−7 (PDT)
Congressional districts3rd, 10th
Websitethurstoncountywa.gov

Thurston County is a county located in the U.S. state of Washington. As of the 2020 census, its population was 294,793.[1] The county seat and largest city is Olympia,[2] the state capital.

Thurston County was created out of Lewis County by the government of Oregon Territory on January 12, 1852. At that time, it covered all of the Puget Sound region and the Olympic Peninsula. On December 22 of the same year, Pierce, King, Island, and Jefferson counties were split off from Thurston County.[3][4] It is named after Samuel R. Thurston, the Oregon Territory's first delegate to Congress.[5]

Thurston County comprises the Olympia–Tumwater, WA Metropolitan Statistical Area and is included in the SeattleTacoma, WA Combined Statistical Area.

  1. ^ a b c "State & County QuickFacts: Thurston County, Washington". United States Census Bureau. Retrieved October 26, 2024.
  2. ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.
  3. ^ Reinartz, Kay. "History of King County Government 1853–2002" (PDF). Archived from the original (PDF) on December 1, 2007. Retrieved December 29, 2007.
  4. ^ "Thurston County Place Names: A Heritage Guide" (PDF). Thurston County Historical Commission. 1992. p. 87. Archived (PDF) from the original on September 18, 2015. Retrieved March 28, 2018.