Sedgwick County, Colorado

Sedgwick County, Colorado
Sedgwick County Courthouse, Julesburg
Location within the U.S. state of Colorado
Coordinates: 40°53′N 102°21′W / 40.88°N 102.35°W / 40.88; -102.35
Country United States
State Colorado
FoundedApril 9, 1889
Named afterJohn Sedgwick
SeatJulesburg
Largest townJulesburg
Area
 • Total
549 sq mi (1,420 km2)
 • Land548 sq mi (1,420 km2)
 • Water1.4 sq mi (3.6 km2)  0.2%
Population
 (2020)
 • Total
2,404
 • Estimate 
(2024)
2,257
 • Density4.39/sq mi (1.69/km2)
Time zoneUTC−7 (Mountain)
 • Summer (DST)UTC−6 (MDT)
Congressional district4th
Websitesedgwickcounty.colorado.gov

Sedgwick County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 2,404. The county seat is Julesburg. The county was named for Fort Sedgwick, a military post along the Platte Trail, which was named for General John Sedgwick. It is located at the state border with Nebraska.