Ancona is an unincorporated community in Livingston County, Illinois, United States. Ancona is located along a railroad line south-southwest of Streator. Ancona has a post office with ZIP code 61311. It formerly served the Santa Fe Railway at Ancona Station. It is part of the geographic region known as Streatorland.
It takes its name from the Italian city of Ancona, capital of the Marches.