De Witt County, Illinois Basics:
De Witt County Illinois - Government Site
Population: 16,484
Area: 398 square miles
County seat: Clinton
Area code(s) in use: 217 309
Time zone: CST
High school graduate or higher: 91.4%
Bachelor's degree or higher: 17.1%
Median household income: $49,626
Persons in poverty: 10.4%
Home ownership rate: 77.5%
Mean travel time to work: 21.9 minutes