Preston Heights is an unincorporated community and census-designated place (CDP) in Will County, Illinois, United States.

[4] According to the United States Census Bureau, the CDP has a total area of 1.5 square miles (3.9 km2), all land.

There were 930 housing units at an average density of 622.5 per square mile (240.3/km2).

19.9% of all households were made up of individuals, and 5.0% had someone living alone who was 65 years of age or older.

Pace provides bus service on Routes 504, 511 and 512 connecting Preston Heights to downtown Joliet and other destinations.