Lake County, South Dakota

Geography According to the U.S. Census Bureau, the county has a total area of 1,489 km² (575 mi²). 1,459 km² (563 mi²) of it is land and 31 km² (12 mi²) of it is water. The total area is 2.06% water.

Demographics As of the census of 2000, there are 11,276 people, 4,372 households, and 2,828 families residing in the county. The population density is 8/km² (20/mi²). There are 5,282 housing units at an average density of 4/km² (9/mi²). The racial makeup of the county is 97.76% White, 0.20% African American, 0.66% Native American, 0.54% Asian, 0.01% Pacific Islander, 0.33% from other races, and 0.51% from two or more races. 0.79% of the population are Hispanic or Latino of any race.

There are 4,372 households out of which 29.80% have children under the age of 18 living with them, 55.90% are married couples living together, 5.90% have a female householder with no husband present, and 35.30% are non-families. 29.20% of all households are made up of individuals and 13.30% have someone living alone who is 65 years of age or older. The average household size is 2.41 and the average family size is 3.00.

In the county, the population is spread out with 23.70% under the age of 18, 15.00% from 18 to 24, 23.40% from 25 to 44, 21.40% from 45 to 64, and 16.30% who are 65 years of age or older. The median age is 36 years. For every 100 females there are 99.80 males. For every 100 females age 18 and over, there are 99.50 males.

Cities and Towns

• Madison
• Nunda
• Ramona
• Wentworth