Lake County, South Dakota Basics:
Lake County South Dakota - Government Site
Population: 11,819
Area: 563 square miles
County seat: Madison
Area code(s) in use: 605
Time zone: CST
High school graduate or higher: 91.3%
Bachelor's degree or higher: 28.2%
Median household income: $46,071
Persons in poverty: 13.7%
Home ownership rate: 71.2%
Mean travel time to work: 17.1 minutes
Adjacent counties:
Brookings Kingsbury McCook Miner Minnehaha Moody