Washington County, Utah

Washington County
Washington County administration building, November 2023
Location within the U.S. state of Utah
Utah's location within the U.S.
Coordinates: 37°17′N 113°31′W / 37.28°N 113.52°W / 37.28; -113.52
Country United States
State Utah
FoundedMarch 3, 1852
Named afterGeorge Washington
SeatSt. George
Largest citySt. George
Area
  Total
2,430 sq mi (6,300 km2)
  Land2,426 sq mi (6,280 km2)
  Water3.6 sq mi (9 km2)  0.1%
Population
 (2020)
  Total
180,279
  Estimate 
(2024)
207,943
  Density74/sq mi (29/km2)
Time zoneUTC−7 (Mountain)
  Summer (DST)UTC−6 (MDT)
Congressional district2nd
Websitewww.washco.state.ut.us

Washington County is a county in the southwestern corner of Utah, United States. As of the 2020 United States census, the population was 180,279, making it the fifth-most populous county in Utah. Its county seat and largest city is St. George. The county was created in 1852 and organized in 1856. It was named after the first President of the United States, George Washington. A portion of the Paiute Indian Reservation is in western Washington County. Washington County comprises the St. George, UT Metropolitan Statistical Area.