Sedgwick is a city in Harvey and Sedgwick counties in the U.S. state of Kansas. As of the 2010 census, the city population was 1,695. Sedgwick was named after John Sedgwick, who was a Major General in the Union Army during the American Civil War.Sedgwick is located at 37°54 59 N 97°25 22 W / 37.91639°N 97.42278°W / 37.91639; -97.42278 (37.916409, -97.422820). According to the United States Census Bureau, the city has a total area of 1.1 square miles (2.8 km²), all land.