Lake Andes is a city in, and the county seat of, Charles Mix County, South Dakota, United States. The population was 879 at the 2010 census.
Lake Andes is located at 43°9′25″N 98°32′17″W / 43.15694°N 98.53806°W / 43.15694; -98.53806 (43.156825, -98.538053).
According to the United States Census Bureau, the city has a total area of 0.82 square miles (2.12 km), of which 0.80 square miles (2.07 km) is land and 0.02 square miles (0.05 km) is water.
As of the census of 2010, there were 879 people, 316 households, and 195 families residing in the city. The population density was 1,098.8 inhabitants per square mile (424.2/km). There were 361 housing units at an average density of 451.3 per square mile (174.2/km). The racial makeup of the city was 40.8% White, 0.1% African American, 52.7% Native American, 0.1% Asian, 0.1% from other races, and 6.1% from two or more races. Hispanic or Latino of any race were 2.8% of the population.
There were 316 households of which 40.2% had children under the age of 18 living with them, 28.2% were married couples living together, 26.6% had a female householder with no husband present, 7.0% had a male householder with no wife present, and 38.3% were non-families. 34.8% of all households were made up of individuals and 19.6% had someone living alone who was 65 years of age or older. The average household size was 2.52 and the average family size was 3.24.
The median age in the city was 33.8 years. 32.1% of residents were under the age of 18; 7.7% were between the ages of 18 and 24; 21.6% were from 25 to 44; 19.9% were from 45 to 64; and 18.7% were 65 years of age or older. The gender makeup of the city was 47.9% male and 52.1% female.
As of the census of 2000, there were 819 people, 320 households, and 181 families residing in the city. The population density was 1,019.7 people per square mile (395.3/km²). There were 369 housing units at an average density of 459.4 per square mile (178.1/km²). The racial makeup of the city was 54.82% White, 0.37% African American, 42.61% Native American, 0.49% from other races, and 1.71% from two or more races. Hispanic or Latino of any race were 2.20% of the population.
There were 320 households out of which 31.3% had children under the age of 18 living with them, 36.9% were married couples living together, 15.0% had a female householder with no husband present, and 43.4% were non-families. 40.0% of all households were made up of individuals and 20.6% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 3.33.
In the city, the population was spread out with 30.2% under the age of 18, 7.8% from 18 to 24, 22.0% from 25 to 44, 20.0% from 45 to 64, and 20.0% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 87.8 males. For every 100 females age 18 and over, there were 86.9 males.
The median income for a household in the city was $21,000, and the median income for a family was $28,833. Males had a median income of $21,333 versus $19,097 for females. The per capita income for the city was $10,022. About 26.3% of families and 33.2% of the population were below the poverty line, including 40.7% of those under age 18 and 28.3% of those age 65 or over.
Lake Andes South Dakota neighborhoods include: Alcester, Baltic, Black Hawk, Box Elder, Brandon, Buffalo Ridge, Camp Crook, Canton, Caputa, Central City, Chancellor, Colton, Creighton, Crooks, Custer, Deadwood, Dell Rapids, Elkton, Ellsworth Afb, Garretson, Hartford, Hermosa, Hill City, Howes, Humboldt, Keystone, Lead, Ludlow, Montrose, Nemo, New Underwood, North Sioux City, Owanka, Parker, Quinn, Rapid City, Renner, Rowena, Saint Onge, Scenic, Sherman, Silver City, Sioux Falls, Spearfish, Sturgis, Valley Springs, Wall, Wanblee, Wasta, Whitewood