Sully County, South Dakota Basics:
Sully County South Dakota - Government Site
Population: 1,423
Area: 1007 square miles
County seat: Onida
Area code(s) in use: 605
Time zone: CST
High school graduate or higher: 90.7%
Bachelor's degree or higher: 28.2%
Median household income: $51,563
Persons in poverty: 5.4%
Home ownership rate: 75.5%
Mean travel time to work: 15.8 minutes