Central Illinois in the context of "Rust Belt"

Springfield is the capital city of the U.S. state of Illinois. Its population was 114,394 at the 2020 United States census, which makes it the state's seventh-most populous city, the second-most populous outside of the Chicago metropolitan area (after Rockford), 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. The city lies in a plain near the Sangamon River north of Lake Springfield. Springfield is the county seat of Sangamon County and is located along historic Route 66.

Springfield was settled by European-Americans in the late 1810s, around the time Illinois became a state. The most famous historic resident was Abraham Lincoln, who lived in Springfield from 1837 until 1861, when he became President of the United States. Major tourist attractions include multiple sites connected with Lincoln, such as the Abraham Lincoln Presidential Library and Museum, the Lincoln Home, the Old State Capitol, the Lincoln-Herndon Law Offices, and the Lincoln Tomb. Largely on the efforts of Lincoln and other area lawmakers, as well as its central location, Springfield was made the state capital in 1839.

Peoria (/piˈɔːriə/ pee-OR-ee-ə) is a city in Peoria County, Illinois, United States, and its county seat. Located on the Illinois River, the city had a population of 113,150 as of the 2020 census, making it the eighth-most populous city in Illinois. It is the principal city of the Peoria metropolitan area in Central Illinois, consisting of Fulton, Marshall, Peoria, Stark, Tazewell, and Woodford counties and home to 402,391 people in 2020.

Established in 1691 by the French explorer Henri de Tonti, Peoria is the oldest permanent European settlement in Illinois, according to the Illinois State Archaeological Survey. Originally known as Fort Clark, it received its current name when the County of Peoria was organized in 1825. The city was named after the Peoria people, a member of the Illinois Confederation. On October 16, 1854, Abraham Lincoln made his Peoria speech against the Kansas–Nebraska Act. Prior to prohibition, Peoria was the center of the whiskey industry in the United States. More than 12 distilleries operated in Peoria by the end of the 19th century, more than any other city in the U.S.

The production of corn (Zea mays mays, also known as "maize") plays a major role in the economy of the United States. The US is the largest corn producer in the world, with 96,000,000 acres (39,000,000 ha) of land reserved for corn production. Corn growth is dominated by west/north central Iowa and east central Illinois. Approximately 13% of its annual yield is exported.

The Springfield Metropolitan Statistical Area, as defined by the United States Census Bureau, is an area consisting of two counties in Central Illinois, anchored by the city of Springfield. As of the 2000 census, the MSA had a population of 201,437 (though a July 1, 2009 estimate placed the population at 208,182).

Metropolitan Springfield is southwest of Chicago, south of Peoria, southwest of Bloomington, west-southwest Champaign, and west of Decatur.