Jefferson County, Iowa Basics:
Jefferson County Iowa - Government Site
Population: 16,777
Area: 436 square miles
County seat: Fairfield
Area code(s) in use: 641 319
Time zone: CST
High school graduate or higher: 94.1%
Bachelor's degree or higher: 30.1%
Median household income: $48,411
Persons in poverty: 14.8%
Home ownership rate: 73.2%
Mean travel time to work: 14.8 minutes
Adjacent counties:
Davis Henry Keokuk Van Buren Wapello Washington