Springfield, Illinois

Springfield is the capital city of the U.S. state of Illinois and the seat of Sangamon County. The city's population was 114,394 at the 2020 census, which makes it the state's seventh-most populous city, the second-most populous outside of the Chicago metropolitan area, and the most populous in Central Illinois. Approximately 208,000 residents live in the Springfield metropolitan area, which consists of all of Sangamon and Menard counties. Springfield lies in a plain near the Sangamon River north of Lake Springfield. The city is on historic Route 66.