Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Sedgwick County (standard abbreviation: SG) is a county located in the U.S. state of Kansas. As of 2000, the population was 452,869, and it was estimated to be 476,026 in the year 2007, making it the second-largest county in the state (after Johnson County in the Kansas City metropolitan area). The largest city and county seat is Wichita. The county was named after General John Sedgwick. Sedgwick County is part of the Wichita metropolitan area.