McCook County, South Dakota
Located in South Dakota, McCook County has a population of 5,751 residents and a median age of 39.5 years, making it the #2,833 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 6.8%. The median home value is $230,100, and the median household income is $83,852, which is 12% above the national median.
Demographics
McCook County has a population of 5,751, making it the #2,833 most populous county in the US. The median age is 39.5 years, which is 1.5% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in McCook County is $83,852, ranking #455 out of 3,222 counties — 11.6% above the national median. The poverty rate is 6.8% and unemployment stands at 1.8%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in McCook County is $230,100 (-18.4% vs national). Renters pay a median of $945/mo and the homeownership rate is 79.5%.
Median Home Value Trend
Rankings →Household Type
Education
In McCook County, 29.9% of adults age 25+ hold a bachelor's degree or higher, which is 11.2% below the national average, ranking #771 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in McCook County is 76.7 years. 12.9% of adults report poor or fair health and 11.0% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
15.7% of adults in McCook County smoke , 34.7% are obese , and 24.3% report excessive drinking.
Adult Smoking Trend
Safety
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Families & Children
9.3% of children in McCook County live in poverty . The teen birth rate is 10.8 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in McCook County is 73.2%. The mean commute time is 27.9 min, which is 1.2% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, McCook County voted Republican with a margin of 49.3%. The vote was 24.2% Dem / 73.5% Rep. Compared to 2020, the margin shifted 4.5 toward Republicans .
Vote Share Over Time
About McCook County, South Dakota
McCook County, South Dakota has a total population of 5,751, making it the 2,833rd most populous county in the United States. The median age in McCook County is 39.5 years, which is 1.5% above the national median of 38.9 years.
The median household income in McCook County is $83,852, which ranks #455 of 3,222 counties nationwide. This is 11.6% above the national median of $75,149. The poverty rate is 6.8%, lower than the national rate of 12.6%. The unemployment rate stands at 1.8%.
The median home value in McCook County is $230,100, 18.4% below the national median. Renters in McCook County pay a median gross rent of $945 per month. The homeownership rate is 79.5%, compared to the national rate of 64.4%.
In McCook County, 29.9% of residents aged 25 and older hold a bachelor's degree or higher, 11.2% below the national average of 33.7%. Health insurance coverage stands at 92.2% of the population. The average commute time for workers is 27.9 min.
McCook County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 92.6% of the population, followed by Hispanic or Latino (3.6%) and Two or More Races (2.7%).
All data for McCook County, South Dakota comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.