Crest Hill is a city in Lockport Township, Will County, Illinois, United States. Crest Hill decided to incorporate itself to avoid being annexed by the City of Joliet and became officially incorporated as the City of Crest Hill January 22, 1960. According to the 2010 census, Crest Hill has a total area of 9.166 square miles, of which 9.03 square miles is land and 0.136 square miles is water. The 2010 census put Crest Hill’s population at 20,837.
The median household income was $45,313 and the median family income was $54,709. Males had a median income of $41,715 compared with $27,667 for females. The per capita income for the city was $22,317. A significant portion of the population resides at Stateville Correctional Center. The 2010 U.S. Census Bureau data states that 3,160 residents of Crest Hill are institutionalized.
Elementary school districts include Chaney-Monge School District 88 and Richland School District 88A. Most of Crest Hill is zoned to Lockport Township High School.