Deerfield is a village in Cook and Lake counties in the U.S. state of Illinois, approximately 25 miles north ofChicago. The population was 18,225 at the 2010 census.
Horace Lamb and Jacob B. Cadwell in 1835 and named Cadwell's Corner. A shopping center located on the site of Cadwell's farm at Waukegan Road and Lake Cook Road still bears that name. The area grew because of the navigable rivers in the area, notably the Des Plaines River and the Chicago River. By 1840, the town's name was changed to Leclair. Within a decade, settler John Millen proposed a further name change to Deerfield in honor of his hometown, Deerfield, Massachusetts and the large number of deer living in the area. At the time, the alternate name for the village on the ballot was Erin. Deerfield won by a vote of 17-13.