Summit County, Utah

Summit County, Utah
Summit County Courthouse in Coalville
Location within the U.S. state of Utah
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 (26 km2)  0.5%
Population
 (2020)
 • Total
42,357
 • Estimate 
(2024)
43,109
 • Density22.63/sq mi (8.736/km2)
Time zoneUTC−7 (Mountain)
 • Summer (DST)UTC−6 (MDT)
Congressional district1st
Websitewww.summitcountyutah.gov

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.