DeKalb County, Illinois Basics:
DeKalb County Illinois - Government Site
Population: 104,622
Area: 631 square miles
County seat: Sycamore
Area code(s) in use: 815
Time zone: CST
High school graduate or higher: 91.1%
Bachelor's degree or higher: 29.0%
Median household income: $53,575
Persons in poverty: 16.9%
Home ownership rate: 61.6%
Mean travel time to work: 26.1 minutes
Adjacent counties:
Boone Kane Kendall La Salle Lee McHenry Ogle Winnebago