McCook County's estimated 2026 population is 6,047 with a growth rate of 1.39% in the past year according to the most recent United States census data. McCook County is the 30th largest county in South Dakota. The 2010 population was 5,609 and has seen a growth of 7.81% since that time.
Data after 2023 is projected based on recent change
Overall: 39.5 years
Female: 39.4 years
Male: 39.6 years
There are 4,114 adults, (1,082 of whom are seniors) in McCook County.
Female: 2,784 (48.4%)
Male: 2,967 (51.6%)
The racial composition of McCook County includes 93.17% White, and smaller percentages for Native American, other race, Black or African American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 5,358 | 93.17% |
| Two or more races | 221 | 3.84% |
| Native American | 103 | 1.79% |
| Other race | 53 | 0.92% |
| Black or African American | 16 | 0.28% |
McCook County's average per capita income is $50,830. Household income levels show a median of $83,852. The poverty rate stands at 6.81%.
Name | Median | Mean |
|---|---|---|
| Married Families | $105,919 | - |
| Families | $99,615 | $116,894 |
| Households | $83,852 | $101,460 |
| Non Families | $51,513 | $63,942 |
Average Income
Median Household Income
Poverty Rate