Brown County's estimated 2026 population is 37,501 with a growth rate of -0.16% in the past year according to the most recent United States census data. Brown County is the 5th largest county in South Dakota. The 2010 population was 36,655 and has seen a growth of 2.31% since that time.
Data after 2023 is projected based on recent change
Overall: 37.8 years
Female: 38.7 years
Male: 36.8 years
There are 28,929 adults, (6,731 of whom are seniors) in Brown County.
Female: 19,092 (50.4%)
Male: 18,785 (49.6%)
The racial composition of Brown County includes 85.39% White, 3.05% Native American, and smaller percentages for Asian, other race, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 32,343 | 85.39% |
| Two or more races | 2,050 | 5.41% |
| Native American | 1,154 | 3.05% |
| Asian | 1,121 | 2.96% |
| Other race | 620 | 1.64% |
| Black or African American | 561 | 1.48% |
| Native Hawaiian or Pacific Islander | 28 | 0.07% |
Brown County's average per capita income is $48,654. Household income levels show a median of $70,898. The poverty rate stands at 11.72%.
Name | Median | Mean |
|---|---|---|
| Married Families | $115,402 | - |
| Families | $100,857 | $123,174 |
| Households | $70,898 | $92,772 |
| Non Families | $40,480 | $53,294 |
Average Income
Median Household Income
Poverty Rate