How Dewey County Compares

Dewey County

27.7 years

South Dakota Average

27.7 years

Rank #62 of 66 in state

National

38.9 years

28.8% below

National Distribution

Where Dewey County falls among all 3,222 U.S. counties for median age.

21.4 years 86.2 years

■ Dewey County: 27.7 years

Ranking Context

Rank	County	Value
#3,199	Pulaski County, MO	27.8 years
#3,200	Onslow County, NC	27.7 years
#3,201	Payne County, OK	27.7 years
#3,202	Dewey County, SD	27.7 years
#3,203	Bennett County, SD	27.4 years
#3,204	Geary County, KS	27.1 years
#3,205	Story County, IA	26.9 years

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Median Age in Dewey County, South Dakota

Dewey County, South Dakota has a median age of 27.7 years, which ranks #3,202 of 3,222 out of 3,222 counties nationwide. This is 28.8% below the national value of 38.9 years.

Within South Dakota, Dewey County ranks #62 of 66 out of 66 counties. This places it in the 1th percentile nationally.

The median age of the total population. All data comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates for 2024.

About this data

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024). All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.