High Quality Content by WIKIPEDIA articles! Roscoe is a village in Winnebago County, Illinois, a suburb of Rockford incorporated in 1965. The village is in a suburban area along the Rock River. It is part of the Rockford, Illinois Metropolitan Statistical Area. As of the 2010 census, the village population was 10,785, up from 6,244 at the 2000 census. The area has been undergoing a period of rapid growth. There have been numerous border disputes with its neighbor to the west, Rockton, Illinois and development and annexations continue by both villages. Recent growth has included the Promontory Ridge and Hidden Creek custom home subdivisions east of the Illinois Tollway, I-39/I-90.