Wichita is the largest city in the U.S. State of Kansas. It is the county seat of Sedgwick County. It is the 51st largest city in the United States. In 2020, 397,532 people lived there. Wichita is the main city of the Wichita metropolitan area; it had an estimated 652,939 people living there in 2023. It is in Sedgwick County, which is in the south-central part of the state.