Clark County's estimated 2026 population is 4,062 with a growth rate of 0.77% in the past year according to the most recent United States census data. Clark County is the 39th largest county in South Dakota. The 2010 population was 3,698 and has seen a growth of 9.84% since that time.
Data after 2023 is projected based on recent change
Overall: 40.3 years
Female: 38.4 years
Male: 41.9 years
There are 2,766 adults, (921 of whom are seniors) in Clark County.
Female: 1,952 (49.8%)
Male: 1,965 (50.2%)
The racial composition of Clark County includes 90.83% White, and smaller percentages for Native American, Asian, Black or African American, other race and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,558 | 90.83% |
| Two or more races | 274 | 7% |
| Native American | 29 | 0.74% |
| Asian | 27 | 0.69% |
| Black or African American | 21 | 0.54% |
| Other race | 8 | 0.2% |
Clark County's average per capita income is $42,933. Household income levels show a median of $70,726. The poverty rate stands at 10.85%.
Name | Median | Mean |
|---|---|---|
| Married Families | $92,895 | - |
| Families | $83,024 | $103,872 |
| Households | $70,726 | $90,733 |
| Non Families | $43,688 | $66,254 |
Average Income
Median Household Income
Poverty Rate