Demographics Atlas Open the interactive map →

Life Expectancy in South Dakota, by County

Life Expectancy for every county in South Dakota, ranked. The highest is Lincoln County at 84.1 and the lowest is Buffalo County at 55.9.

South Dakota: n/a · United States: n/a · median county in South Dakota: 78.0

See Life Expectancy on the interactive map →

Average number of years a baby born today would live under current mortality conditions.

Source: County Health Rankings 2024 (from National Center for Health Statistics, CDC), 2024.

Life Expectancy in other states

Other statistics for South Dakota by county