Winnebago is a village in Winnebago County, Illinois, United States. It is part of the Rockford, Illinois Metropolitan Statistical Area. The population was 3,101 at the 2010 census, up from 2,958 at the 2000 census.
The community was first settled in 1835. In 1849, the community adopted the name Elida, but later renamed itself Winnebago after a native American tribe that had lived in the area. Winnebago was incorporated as a village in 1878, having the a population of about nine.
The first settlement was actually at Westfield corners because that was where the stagecoach route passed through. The first settler in the Winnebago Township was David Adams Holt in 1835.