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1 / 23#23. Abbeville County
- Life expectancy: 73.3 years
--- 1.9 years lower than the state average
Counties with the shortest life expectancy in South Carolina
Life expectancy can be affected by a variety of factors. About 25% of your lifespan is determined by genetics, according to the National Library of Medicine. Health and wellness habits—like following a balanced, nutrient-rich diet; not smoking; drinking minimal alcohol; maintaining a healthy weight; and staying physically active—can add more than a decade to your life, research from the National Institutes of Health shows. While these factors are significant, another important element that you might not have considered is your environment and community.
While life expectancy generally increases annually in the United States—jumping from about 70.8 years old to 77.5 between 1970 and 2022, according to the Centers for Disease Control and Prevention—this particular metric can vary from state to state or even county to county. In some parts of the country, the average lifespan is getting shorter based on a variety of risk factors on top of health, including socioeconomic factors like poverty, unemployment, income, and education.
According to a 2020 study from researchers at Penn State, West Virginia, and Michigan State Universities, communities with a higher population density, more fast food restaurants, and a high number of extraction industry-based jobs tend to have shorter life expectancies.
To find out how life expectancy varies within South Carolina, Stacker used 2024 County Health Rankings & Roadmaps from the University of Wisconsin Population Health Institute to identify the counties with the shortest life expectancy. Life expectancy measures the average number of years from birth a person can expect to live and is calculated based on the number of deaths in a given time period and the average number of people at risk of dying during that period. Counties with unreliable or insufficient data were excluded from the analysis. Mortality data came from the National Vital Statistics System.
Read on to see if your county is on the list.
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2 / 23#22. Sumter County
- Life expectancy: 72.7 years
--- 2.5 years lower than the state average
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3 / 23#21. McCormick County
- Life expectancy: 72.4 years
--- 2.8 years lower than the state average
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4 / 23#20. Clarendon County
- Life expectancy: 72.2 years
--- 3.0 years lower than the state average
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5 / 23#19. Chesterfield County
- Life expectancy: 72.1 years
--- 3.1 years lower than the state average
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6 / 23#18. Laurens County
- Life expectancy: 71.9 years
--- 3.3 years lower than the state average
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7 / 23#17. Bamberg County
- Life expectancy: 71.8 years
--- 3.4 years lower than the state average
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8 / 23#16. Florence County
- Life expectancy: 71.3 years
--- 3.9 years lower than the state average
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9 / 23#13. Cherokee County (tie)
- Life expectancy: 71.0 years
--- 4.2 years lower than the state average
Jared Freye // Shutterstock
10 / 23#13. Darlington County (tie)
- Life expectancy: 71.0 years
--- 4.2 years lower than the state average
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James R Poston // Shutterstock
11 / 23#13. Orangeburg County (tie)
- Life expectancy: 71.0 years
--- 4.2 years lower than the state average
C Dash // Shutterstock
12 / 23#12. Barnwell County
- Life expectancy: 70.8 years
--- 4.4 years lower than the state average
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13 / 23#11. Williamsburg County
- Life expectancy: 70.5 years
--- 4.7 years lower than the state average
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14 / 23#9. Hampton County (tie)
- Life expectancy: 70.3 years
--- 4.9 years lower than the state average
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15 / 23#9. Fairfield County (tie)
- Life expectancy: 70.3 years
--- 4.9 years lower than the state average
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16 / 23#8. Union County
- Life expectancy: 69.9 years
--- 5.3 years lower than the state average
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17 / 23#7. Marlboro County
- Life expectancy: 69.8 years
--- 5.4 years lower than the state average
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18 / 23#6. Allendale County
- Life expectancy: 69.5 years
--- 5.7 years lower than the state average
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19 / 23#4. Chester County (tie)
- Life expectancy: 69.3 years
--- 5.9 years lower than the state average
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20 / 23#4. Colleton County (tie)
- Life expectancy: 69.3 years
--- 5.9 years lower than the state average
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21 / 23#3. Lee County
- Life expectancy: 69.1 years
--- 6.1 years lower than the state average
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22 / 23#2. Marion County
- Life expectancy: 69.0 years
--- 6.2 years lower than the state average
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23 / 23#1. Dillon County
- Life expectancy: 67.9 years
--- 7.3 years lower than the state average
This story features data reporting by Karim Noorani, writing by Kiersten Hickman, and is part of a series utilizing data automation across 49 states.
