Sedgwick County was founded in 1867, and named after John Sedgwick, who was a major general in the Union Army during
 the American Civil War.  In 1887, the Chicago, Kansas and Nebraska Railway built a branch line north–south from
 Herington to Caldwell. This branch line connected Herington, Lost Springs, Lincolnville, Antelope, Marion, Aulne, Peabody,
 Elbing, Whitewater, Furley, Kechi, Wichita, Peck, Corbin, Wellington, Caldwell. By 1893, this branch line was incrementally
 built to Fort Worth, Texas. This line is called the "OKT". The Chicago, Kansas and Nebraska Railway was foreclosed in
 1891 and was taken over by Chicago, Rock Island and Pacific Railway, which shut down in 1980 and reorganized as
 Oklahoma, Kansas and Texas Railroad, merged in 1988 with Missouri Pacific Railroad, and finally merged in 1997 with
 Union Pacific Railroad. Most locals still refer to this railroad as the "Rock Island". Sedgwick County is part of the Wichita,
 KS Metropolitan Statistical Area.