Heyworth is a village in McLean County, Illinois, United States. It was founded in 1859. As of the 2020 census, Heyworth had a population of 2,791. It is part of the Bloomington–Normal Metropolitan Statistical Area.

McLean County is the largest county by land area in the U.S. state of Illinois. According to the 2020 Census, it had a population of 170,954. Its county seat is Bloomington. McLean County is included in the Bloomington–Normal, IL Metropolitan Statistical Area.