Clark County's estimated 2026 population is 4,032 with a growth rate of 0.72% in the past year according to the most recent United States census data. Clark County is the 40th largest county in South Dakota. The 2010 population was 3,698 and has seen a growth of 9.03% since that time.
Data after 2023 is projected based on recent change
The racial composition of Clark County includes 91.82% White, and smaller percentages for other race, Asian, Native American, Black or African American and multiracial populations.
White (91.82%)
Two or more races (4.7%)
Other race (1.63%)
Asian (0.72%)
Native American (0.59%)
Black or African American (0.54%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,559 | 91.82% |
| Two or more races | 182 | 4.7% |
| Other race | 63 | 1.63% |
| Asian | 28 | 0.72% |
| Native American | 23 | 0.59% |
| Black or African American | 21 | 0.54% |
Married
Widowed
Divorced
Separated
Never Married
Clark County's average per capita income is $36,985. Household income levels show a median of $62,885. The poverty rate stands at 11.12%.
Name | Median | Mean |
|---|---|---|
| Married Families | $82,393 | - |
| Families | $77,500 | $106,549 |
| Households | $62,885 | $88,749 |
| Non Families | $35,417 | $57,804 |
Average Income
Median Household Income
Poverty Rate