Jefferson County, Kansas Basics:
Jefferson County Kansas - Government Site
Population: 18,904
Area: 533 square miles
County seat: Oskaloosa
Area code(s) in use: 785 913
Time zone: CST
High school graduate or higher: 92.1%
Bachelor's degree or higher: 22.8%
Median household income: $58,434
Persons in poverty: 7.4%
Home ownership rate: 85.7%
Mean travel time to work: 29.0 minutes
Adjacent counties:
Atchison Douglas Jackson Leavenworth Shawnee