How Clark County Compares

Clark County

40.3 years

South Dakota Average

40.3 years

Rank #38 of 66 in state

National

38.9 years

3.6% above

National Distribution

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

21.4 years 86.2 years

■ Clark County: 40.3 years

Ranking Context

Rank	County	Value
#2,039	Shelby County, OH	40.3 years
#2,040	Harmon County, OK	40.3 years
#2,041	Lane County, OR	40.3 years
#2,042	Clark County, SD	40.3 years
#2,043	Delta County, TX	40.3 years
#2,044	Greene County, VA	40.3 years
#2,045	Marion County, WV	40.3 years

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Median Age in Clark County, South Dakota

Clark County, South Dakota has a median age of 40.3 years, which ranks #2,042 of 3,222 out of 3,222 counties nationwide. This is 3.6% above the national value of 38.9 years.

Within South Dakota, Clark County ranks #38 of 66 out of 66 counties. This places it in the 37th 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.