Mission is a city in Todd County, South Dakota, United States, within the boundaries of the Rosebud Indian Reservation. The population was 1,182 at the 2010 census.
According to the United States Census Bureau, the city has a total area of 0.59 square miles (1.53 km), all of it land.
Mission has been assigned the ZIP code 57555 and the FIPS place code 42940.
The closely linked communities of Antelope and White Horse, and other nearby settlements, including School District and Bureau of Indian Affairs housings and private communities, are located outside the city limits.
As of the census of 2010, there were 1,182 people, 398 households, and 298 families residing in the city. The population density was 2,003.4 inhabitants per square mile (773.5/km). There were 443 housing units at an average density of 750.8 per square mile (289.9/km). The racial makeup of the city was 11.7% White, 0.3% African American, 85.4% Native American, 0.1% Asian, 0.2% from other races, and 2.5% from two or more races. Hispanic or Latino of any race were 2.1% of the population.
There were 398 households of which 57.0% had children under the age of 18 living with them, 21.9% were married couples living together, 39.7% had a female householder with no husband present, 13.3% had a male householder with no wife present, and 25.1% were non-families. 21.4% of all households were made up of individuals and 5.8% had someone living alone who was 65 years of age or older. The average household size was 2.97 and the average family size was 3.30.
The median age in the city was 23.2 years. 40.1% of residents were under the age of 18; 14.3% were between the ages of 18 and 24; 23.1% were from 25 to 44; 17.2% were from 45 to 64; and 5.2% were 65 years of age or older. The gender makeup of the city was 46.1% male and 53.9% female.
As of the census of 2000, there were 904 people, 302 households, and 214 families residing in the city. The population density was 1,523.4 people per square mile (591.6/km²). There were 339 housing units at an average density of 571.3 per square mile (221.8/km²). The racial makeup of the city was 74.89% Native American, 22.01% White, 0.11% African American, and 2.99% from two or more races. Hispanic or Latino of any race were 1.33% of the population.
There were 302 households out of which 46.7% had children under the age of 18 living with them, 33.4% were married couples living together, 27.5% had a female householder with no husband present, and 29.1% were non-families. 24.5% of all households were made up of individuals and 7.0% had someone living alone who was 65 years of age or older. The average household size was 2.82 and the average family size was 3.34.
In the city, the population was spread out with 40.2% under the age of 18, 9.8% from 18 to 24, 25.6% from 25 to 44, 17.7% from 45 to 64, and 6.7% who were 65 years of age or older. The median age was 25 years. For every 100 females, there were 87.2 males. For every 100 females age 18 and over, there were 82.8 males.
As of 2000 the median income for a household in the city was $23,631, and the median income for a family was $21,375. Males had a median income of $25,417 versus $22,778 for females. The per capita income for the city was $11,374. About 29.5% of families and 30.8% of the population were below the poverty line, including 39.0% of those under age 18 and 24.4% of those age 65 or over.
Mission 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