ZIP Code 61555

About Pekin

Pekin is located in, and is the county seat of, Tazewell County, Illinois, United States. It is located along the Illinois River in Central Illinois. The population was 31,731 at the 2020 census. Pekin is the largest city in Tazewell County and the second-most populous city in the Peoria metropolitan area. A small portion of the city limits extend into Peoria County.

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