Sedgwick is a statutory town in Sedgwick County, Colorado, United States. The population was 191 at the 2000 census.
The town was named for Fort Sedgwick, which was named after John Sedgwick, who was a Major General in the Union Army during the American Civil War.
Sedgwick is located at 40°56′9″N 102°31′31″W / 40.93583°N 102.52528°W / 40.93583; -102.52528 (40.935706, -102.525272). According to the United States Census Bureau, the town has a total area of 0.3 square miles (0.9 km²), all of it land.