The city of Pekin is the county seat of Tazewell County in the U.S. state of Illinois. Located on the Illinois River, Pekin is the largest city of Tazewell County and part of the Peoria metropolitan area. As of the 2010 census, its population is 34,094. A small portion of the city limits extend into Peoria County. Pekin is the 13th-most populous city in Illinois outside of the Chicago Metropolitan Area.
Pekin's Mineral Springs Park is located near Pekin Hospital and the Miller Senior Center. The city is also home to a high-rise residential facility of the United Auto Workers; the home of the Pekin Federal Correctional Institution; and the headquarters of a regional insurance company, Pekin Insurance.