Sedgwick County, Colorado

Sedgwick County is located in the northeastern corner of Colorado along the Nebraska state line. Julesburg serves as the county seat and largest community, giving the area a quiet, small-town character.

Agriculture and ranching are central to the local economy, with the county’s flat plains providing ideal conditions for farming. The South Platte River flows through the region, creating important habitat for birds and offering opportunities for wildlife viewing.

Sedgwick County also has a connection to the history of the Pony Express, adding an interesting historical element to this otherwise peaceful rural area. With its wide-open landscapes, small communities, and agricultural character, Sedgwick County offers a classic example of life on Colorado’s northeastern plains.

CategoryDetails
County NameSedgwick County
County SeatJulesburg
EtymologyNamed after Major General John Sedgwick, a Union Army officer during the American Civil War
Cities, Towns, and CommunitiesJulesburg, Ovid, Sedgwick
Interstates and HighwaysI-76, U.S. Highway 138, U.S. Highway 385
FIPS Code08-115
Total Area (Land and Water)549 square miles (land: 548 sq mi, water: 1 sq mi)
Adjacent Counties (and Direction)Deuel County, Nebraska (North), Perkins County, Nebraska (East), Phillips County (South), Logan County (West), Cheyenne County, Nebraska (Northwest)
Time ZoneMountain Time Zone (MST/MDT)
PopulationApproximately 2,300
StateColorado
Coordinates40.8766° N, 102.3537° W
Major LandmarksJulesburg Drag Strip, Fort Sedgwick Museum, South Platte River
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