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South Dakota population by year, 1990 to 2025

South Dakota grew 34 percent from 696,667 in 1990 to a record 935,094 in 2025, though it still ranks 46th among the 50 states.

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What the data shows

  • South Dakota: 697K in 1990, 935K in 2025.

About this chart

South Dakota had 935,094 residents in 2025 against 696,667 in 1990, a gain of about 238,000 people or 34.2 percent. The estimate has risen every year since 2000 and passed 900,000 in 2022. The 1990s were slower: the state added fewer than 40,000 people in the first nine years. The 2025 total is about 65,000 short of 1 million.

Growth since then has picked up: 23.7 percent since 2000, 14.6 percent since 2010 and 5.3 percent since 2020. Even so, the rankings barely moved. South Dakota was 45th among the 50 states in 1990 and has been 46th in 2000, 2010 and 2025. The data are Census Bureau resident estimates for July 1.

The data

Source: U.S. Census Bureau population estimates, July 1 (vintages 1999, 2000–2010 intercensal, 2020 and 2025), resident population of South Dakota, thousands. Retrieved November 4, 2026.

Population of South Dakota, Residents, 1990 to 2025, 1990–2025
DateSouth Dakota
1990697K
1991701K
1992709K
1993716K
1994723K
1995728K
1996731K
1997731K
1998731K
1999733K
2000756K
2001758K
2002760K
2003764K
2004770K
2005776K
2006783K
2007792K
2008799K
2009807K
2010816K
2011824K
2012834K
2013843K
2014850K
2015855K
2016864K
2017874K
2018879K
2019887K
2020888K
2021896K
2022909K
2023918K
2024927K
2025935K

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Frequently asked questions

What is the population of South Dakota?

South Dakota had about 935,000 residents (935,094) in July 2025, according to Census Bureau estimates. That ranks 46th among the 50 states.

When did South Dakota pass 900,000 people?

South Dakota's estimate was 896,300 in 2021 and 909,200 in 2022, so it passed 900,000 in 2022. It reached 935,094 in 2025.

How fast is South Dakota growing?

South Dakota is up 14.6 percent since 2010 and 5.3 percent since 2020, adding about 47,000 people in the last five years.

Where does this data come from?

U.S. Census Bureau population estimates, July 1 (vintages 1999, 2000–2010 intercensal, 2020 and 2025), resident population of South Dakota, thousands. Retrieved November 4, 2026. You can download the full table as a CSV from this page.

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