Summit County, Utah

Summit County
Summit County Courthouse in Coalville
Location within the U.S. state of Utah
Utah's location within the U.S.
Coordinates: 40°53′N 110°58′W / 40.88°N 110.97°W / 40.88; -110.97
Country United States
State Utah
Founded1854 (created)
1861 (organized)
Named afterThe summits of the mountains
SeatCoalville
Largest cityPark City
Area
  Total
1,882 sq mi (4,870 km2)
  Land1,872 sq mi (4,850 km2)
  Water10 sq mi (30 km2)  0.5%
Population
 (2020)
  Total
42,357
  Estimate 
(2024)
43,109
  Density23/sq mi (8.7/km2)
Time zoneUTC−7 (Mountain)
  Summer (DST)UTC−6 (MDT)
Congressional district1st
Websitewww.co.summit.ut.us

Summit County is a county in the U.S. state of Utah, occupying a rugged and mountainous area. As of the 2020 United States census, the population was 42,357. Its county seat is Coalville, and the largest city is Park City.