Brown County's estimated 2025 population is 37,397 with a growth rate of -0.45% in the past year according to the most recent United States census data. Brown County is the 4th largest county in South Dakota. The 2010 population was 36,655 and has seen a growth of 2.02% since that time.
Data after 2023 is projected based on recent change
The racial composition of Brown County includes 85.65% White, 4.58% Native American, 3.04% Asian, and smaller percentages for other race, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
White
Two or more races
Native American
Asian
Other race
Black or African American
Native Hawaiian or Pacific Islander
Race | Population | Percentage (of total) |
|---|---|---|
| White | 32,615 | 85.65% |
| Two or more races | 1,918 | 5.04% |
| Native American | 1,743 | 4.58% |
| Asian | 1,158 | 3.04% |
| Other race | 445 | 1.17% |
| Black or African American | 171 | 0.45% |
| Native Hawaiian or Pacific Islander | 29 | 0.08% |
Married
Widowed
Divorced
Separated
Never Married
Brown County's average per capita income is $47,418. Household income levels show a median of $70,239. The poverty rate stands at 10.58%.
Name | Median | Mean |
|---|---|---|
| Married Families | $111,228 | - |
| Families | $97,594 | $117,695 |
| Households | $70,239 | $90,537 |
| Non Families | $42,380 | $53,533 |
Average Income
Median Household Income
Poverty Rate