Arlington Park was a horse race track in the Chicago suburb of Arlington Heights, Illinois. Called the Arlington Park Jockey Club during a period of its history, it was located adjacent to the Illinois Route 53 expressway and serviced by the Chicago and Northwestern Railroad.

Arlington Heights is a village in Cook County, Illinois, United States. A northwestern suburb of Chicago, it lies about 25 miles (40 km) northwest of the city's downtown. As of the 2020 census, the village's population was 77,676, making it the 15th-most populous municipality in Illinois.