Lake County, Illinois Basics:
Lake County Illinois - Government Site
Population: 701,219
Area: 444 square miles
County seat: Waukegan
Area code(s) in use: 847
Time zone: CST
High school graduate or higher: 88.7%
Bachelor's degree or higher: 41.8%
Median household income: $79,085
Persons in poverty: 8.7%
Home ownership rate: 76.8%
Mean travel time to work: 30.1 minutes
Adjacent counties:
Cook Kane Kenosha (WI) McHenry