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Sioux Falls is the largest city located in South Dakota. As of the 2000 census, the city had a total population of 123,975. It is the county seat of Minnehaha County6.
According to the United States Census Bureau, the city has a total area of 145.9 km² (56.3 mi²). 145.9 km² (56.3 mi²) of it is land and 0.1 km² (0.04 mi²) of it is water. The total area is 0.04% water.
As of the census of 2000, there are 123,975 people, 49,731 households, and 30,783 families residing in the city. The population density is 849.9/km² (2,201.4/mi²). There are 51,680 housing units at an average density of 354.3/km² (917.7/mi²). The racial makeup of the city is 91.90% White, 1.80% African American, 2.12% Native American, 1.19% Asian, 0.05% Pacific Islander, 1.23% from other races, and 1.71% from two or more races. 2.49% of the population are Hispanic or Latino of any race.
There are 49,731 households out of which 32.1% have children under the age of 18 living with them, 48.4% are married couples living together, 10.0% have a female householder with no husband present, and 38.1% are non-families. 29.8% of all households are made up of individuals and 8.9% have someone living alone who is 65 years of age or older. The average household size is 2.40 and the average family size is 3.00.
In the city the population is spread out with 25.2% under the age of 18, 11.8% from 18 to 24, 32.4% from 25 to 44, 19.6% from 45 to 64, and 11.1% who are 65 years of age or older. The median age is 33 years. For every 100 females there are 97.2 males. For every 100 females age 18 and over, there are 94.4 males.
The median income for a household in the city is $41,221, and the median income for a family is $51,516. Males have a median income of $32,216 versus $24,861 for females. The per capita income for the city is $21,374. 8.4% of the population and 5.6% of families are below the poverty line. Out of the total people living in poverty, 10.3% are under the age of 18 and 7.4% are 65 or older.