Brown County's estimated 2026 population is 37,185 with a growth rate of -0.42% 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 1.45% 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 (85.65%)
Two or more races (5.04%)
Native American (4.58%)
Asian (3.04%)
Other race (1.17%)
Black or African American (0.45%)
Native Hawaiian or Pacific Islander (0.08%)
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