Polk County, Iowa Basics:
Polk County Iowa - Government Site
Population: 444,009
Area: 574 square miles
County seat: Des Moines
Area code(s) in use: 515
Time zone: CST
High school graduate or higher: 91.5%
Bachelor's degree or higher: 34.3%
Median household income: $58,096
Persons in poverty: 11.3%
Home ownership rate: 69.7%
Mean travel time to work: 18.7 minutes
Adjacent counties:
Boone Dallas Jasper Madison Marion Story Warren