Buffalo County's 2026 population is estimated at 13,512, reflecting a 0.18% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Buffalo County is the 67th largest county in Wisconsin. The 2010 population was 13,551 and has grown -0.29% since 2010.
Data after 2023 is projected based on recent change
Overall: 46.5 years
Female: 46.2 years
Male: 46.8 years
There are 10,725 adults, (3,218 of whom are seniors) in Buffalo County.
Female: 6,634 (49.5%)
Male: 6,759 (50.5%)
The racial composition of Buffalo County includes 94.07% White, and smaller percentages for other race, Black or African American, Asian, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 12,599 | 94.07% |
| Two or more races | 492 | 3.67% |
| Other race | 183 | 1.37% |
| Black or African American | 57 | 0.43% |
| Asian | 33 | 0.25% |
| Native American | 29 | 0.22% |
Buffalo County 's average per capita income is $49,142. Household income levels show a median of $70,479. The poverty rate stands at 8.43%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $95,970 | - |
| Families | $85,785 | $96,844 |
| Households | $70,479 | $85,332 |
| Non Families | $44,223 | $60,199 |
Average Income
Median Household Income
Poverty Rate
