Deer Park is a village in Lake and Cook Counties, Illinois.

[2] The village is one of the few left in the Chicago area that enjoy a green belt which is bordered by two large natural areas providing outdoor recreation and open space.

Residential zoning is mainly single family homes with lot of sizes of 1-acre (4,000 m2) or more.

The Metra/Chicago & Northwestern train line provides commuter service to Chicago with stations in nearby Barrington and Palatine.

17.28% of all households were made up of individuals, and 9.88% had someone living alone who was 65 years of age or older.