Roscoe is a village in Winnebago County, Illinois, along the Rock River. It is in a suburban area 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.