Winnebago County, Illinois Basics:
Winnebago County Illinois - Government Site
Population: 291,844
Area: 513 square miles
County seat: Rockford
Area code(s) in use: 815
Time zone: CST
High school graduate or higher: 85.6%
Bachelor's degree or higher: 20.9%
Median household income: $47,573
Persons in poverty: 17.0%
Home ownership rate: 67.6%
Mean travel time to work: 21.9 minutes
Adjacent counties:
Boone Dekalb Green (WI) Ogle Rock (WI) Stephenson