Gregory County's estimated 2026 population is 4,003 with a growth rate of -0.84% in the past year according to the most recent United States census data. Gregory County is the 41st largest county in South Dakota. The 2010 population was 4,270 and has seen a growth of -6.25% since that time.
Data after 2023 is projected based on recent change
Overall: 44.7 years
Female: 47.2 years
Male: 42.9 years
There are 3,037 adults, (1,068 of whom are seniors) in Gregory County.
Female: 1,963 (48.9%)
Male: 2,053 (51.1%)
The racial composition of Gregory County includes 86.53% White, 4.03% Native American, and smaller percentages for Asian, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,475 | 86.53% |
| Two or more races | 291 | 7.25% |
| Native American | 162 | 4.03% |
| Asian | 43 | 1.07% |
| Black or African American | 35 | 0.87% |
| Native Hawaiian or Pacific Islander | 10 | 0.25% |
Gregory County's average per capita income is $42,562. Household income levels show a median of $62,917. The poverty rate stands at 9.53%.
Name | Median | Mean |
|---|---|---|
| Married Families | $94,798 | - |
| Families | $88,851 | $102,220 |
| Households | $62,917 | $81,084 |
| Non Families | $35,164 | $47,793 |
Average Income
Median Household Income
Poverty Rate