 preston heights is a census-designated place (cdp) in will county, illinois, united states. as of the 2010 census, the cdp population was 2,575. ==geography== preston heights is located at  (41.496564, -88.072573).{{cite web|url=http://www.census.gov/geo/www/gazetteer/gazette.html|publisher=[[united states census 
Census-designated_places_in_Illinois Census-designated_places_in_Will_County,_Illinois