If you want to live longer, a move to South Dakota will do you good.

A study commissioned by the American Economic Association found that a move to a vast majority of counties in the Mount Rushmore State would add anywhere from 0.01 to 1.25 years onto a person's life expectancy in those ages 65 and older.

They factored in things like pollution, quality of health care, lower crime rates, and higher socioeconomic status to determine the rankings.

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Overall, 55 of South Dakota's 66 counties would add some time to the life expectancy of an older person moving there:

+0.26 to +1.25 years

  • Butte
  • Custer
  • Fall River
  • Lawrence
  • Meade
  • Pennington

+0.01 to +0.26 years

  • Bennett
  • Bon Homme
  • Brookings
  • Brule
  • Buffalo
  • Campbell
  • Charles Mix
  • Clark
  • Clay
  • Codington
  • Corson
  • Day
  • Deuel
  • Dewey
  • Douglas
  • Faulk
  • Grant
  • Gregory
  • Haakon
  • Hamlin
  • Hand
  • Hughes
  • Hutchinson
  • Hyde
  • Jackson
  • Jones
  • Kingsbury
  • Lake
  • Lincoln
  • Lyman
  • Marshall
  • McCook
  • Mellette
  • Miner
  • Minnehaha
  • Moody
  • Oglala Lakota
  • Perkins
  • Potter
  • Roberts
  • Stanley
  • Sully
  • Todd
  • Tripp
  • Turner
  • Walworth
  • Yankton
  • Zeibach

Another eleven counties would see life expectancies stay about the same:

-0.15 to -0.02 years

  • Aurora
  • Beadle
  • Brown
  • Davison
  • Edmunds
  • Hanson
  • Harding
  • Jerauld
  • McPherson
  • Sanborn
  • Spink

Only one county fell into the category that would see a person's life expectancy drop after a move there:

-0.08 to - 0.33 years

  • Union

Overall in the nation, cities along either coast were among the places that saw the biggest jumps in life expectancy.

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.