Hanover Park is a village in Cook and DuPage counties in the U.S. state of Illinois, a suburb of Chicago. The population was 37,973 at the 2010 census. Ontarioville is a neighborhood within the village. Hanover Park is located at 41°58′44″N 88°8′46″W (41.978827, −88.146109).According to the 2010 census, Hanover Park has a total area of 6.435 square miles (16.67 km2), of which 6.33 square miles (16.39 km2) (or 98.37%) is land and 0.105 square miles (0.27 km2) (or 1.63%) is water.As of the census of 2016, there were 38,210 people, 11,264 households, and 9,123 families living in the village. The population density was 5,634.4 people per square mile (2,176.6/km2).
The town is served by several school districts. One is Elgin Area School District U46, a Unit School District. It serves an area of some 90 square miles (230 km2) in Cook, DuPage and Kane Counties. Almost 40,000 children of school age are in its area. U-46 is the second largest in Illinois behind Chicago Public Schools. Other school districts serving Hanover Park include Schaumburg Township Elementary School District 54, Township High School District 211, Community Consolidated School District 93, Glenbard Township High School District 87, Keeneyville School District 20 and Lake Park High School District 108. A total of six different public high schools serve the village.
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