Gregory County's estimated 2025 population is 4,056 with a growth rate of 0.47% in the past year according to the most recent United States census data. Gregory County is the 39th largest county in South Dakota. The 2010 population was 4,270 and has seen a growth of -5.01% since that time.
Data after 2023 is projected based on recent change
The racial composition of Gregory County includes 87.43% White, 5.61% Native American, and smaller percentages for Black or African American, Native Hawaiian or Pacific Islander, Asian, other race and multiracial populations.
White
Native American
Two or more races
Black or African American
Native Hawaiian or Pacific Islander
Asian
Other race
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,491 | 87.43% |
| Native American | 224 | 5.61% |
| Two or more races | 220 | 5.51% |
| Black or African American | 40 | 1% |
| Native Hawaiian or Pacific Islander | 13 | 0.33% |
| Asian | 5 | 0.13% |
| Other race | 0 | 0% |
Married
Widowed
Divorced
Separated
Never Married
Gregory County's average per capita income is $39,303. Household income levels show a median of $52,432. The poverty rate stands at 11.05%.
Name | Median | Mean |
|---|---|---|
| Married Families | $87,458 | - |
| Families | $76,750 | $94,153 |
| Households | $52,432 | $73,414 |
| Non Families | $32,227 | $40,255 |
Average Income
Median Household Income
Poverty Rate