Earlier this year, South Dakota was in the news as one of only 16 states in America to see its population go up by more than 0.5 percent from July 2020 to July 2021.

During that 12 month period, the state posted an increase of 0.9 percent for a total of 901,820 people.

Well, that's nothing compared to what's being predicted for the Mount Rushmore State over the next two decades.

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24/7 Wall St. has published the results of a study done by the Weldon Cooper Center for Public Service at the University of Virginia, which shows that South Dakota's population will swell by more than 150,000 people by the year 2040.

That's an increase of 17 percent from the 2020 census figures, which put our population at 891,688. That bump is projected to be the 15th highest in America.

In 2040, that number is expected to top one million people - 1,043,032 to be exact.

And while a 17 percent bump is impressive, six states are projected to see their numbers increase by more than 30 percent.


  1. Texas: +35.2%
  2. North Dakota: +34.3%
  3. Utah: +34.1%
  4. Florida: +32.0%
  5. Colorado: +31.7%
  6. Nevada: +30.1%
  7. Washington: +27.3%
  8. Arizona: +26.1%
  9. Idaho: +25.4%
  10. South Carolina: +22.5%

READ ON: See the States Where People Live the Longest

Stacker used data from the 2020 County Health Rankings to rank every state's average life expectancy from lowest to highest. The 2020 County Health Rankings values were calculated using mortality counts from the 2016-2018 National Center for Health Statistics. The U.S. Census 2019 American Community Survey and America's Health Rankings Senior Report 2019 data were also used to provide demographics on the senior population of each state and the state's rank on senior health care, respectively.

Read on to learn the average life expectancy in each state.

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