Rochelle is a city in Ogle County, Illinois, United States. The population was 9,574 at the 2010 census, up from 9,424 at the 2000 census. Rochelle is about 75 miles (121km) west of Chicago and 25 miles (40km) south of Rockford. Rochelle is the birthplace and Hometown of three-time Academy Award nominee Joan Allen. Rochelle Railroad Park has spawned many imitators, such as the Railroad Platform in Folkston, Georgia. For many years the Whitcomb Locomotive Works, founded by George Dexter Whitcomb, manufactured industrial locomotives as well as the Partin Palmer automobile, in Rochelle.