<Tr> <Td_colspan="4"> Source: 1910--2010 2016 Estimate </Td> </Tr> <P> The United States Census Bureau estimates the population of South Dakota was 858,469 on July 1, 2015, a 5.44% increase since the 2010 United States Census . </P> <P> As of 2015, South Dakota had an estimated population of 858,469, an increase of 44,289, or 5.44%, since the year 2010 . 7.3% of South Dakota's population was reported as under 5, 24% under 18, and 14.3% were 65 or older . Females made up approximately 50.2% of the population . As of the 2000 census, South Dakota ranked fifth - lowest in the nation in population and population density . </P> <P> Of the people residing in South Dakota, 65.7% were born in South Dakota, 31.4% were born in another US state, 0.6% were born in Puerto Rico, U.S. Island areas, or born abroad to American parent (s), and 2.3% were born in another country . </P>

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