Berwyn Township is one of 29 townships in Cook County, Illinois, USA. As of the 2010 census, its population was 56,657. It is coterminous with the city of Berwyn. Berwyn Township, with a population of 56,657 (2010 census) and over 22,000 households includes the area bounded on the north by Roosevelt Road, on the south by Pershing Road (39th Street), on the east by Lombard Avenue (west side of the street only), and on the west by Harlem Avenue (east side of the street only).