Sibley County's 2026 population is estimated at 15,320, reflecting a 0.41% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Sibley County is the 54th largest county in Minnesota. The 2010 population was 15,257 and has grown 0.41% since 2010.
Data after 2023 is projected based on recent change
Overall: 42.4 years
Female: 42.4 years
Male: 42.3 years
There are 11,615 adults, (2,922 of whom are seniors) in Sibley County.
Female: 7,280 (48.5%)
Male: 7,725 (51.5%)
The racial composition of Sibley County includes 87.9% White, 3.05% other race, and smaller percentages for Black or African American, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 13,189 | 87.9% |
| Two or more races | 1,075 | 7.16% |
| Other race | 458 | 3.05% |
| Black or African American | 179 | 1.19% |
| Asian | 61 | 0.41% |
| Native American | 33 | 0.22% |
| Native Hawaiian or Pacific Islander | 10 | 0.07% |
Sibley County 's average per capita income is $51,153. Household income levels show a median of $77,634. The poverty rate stands at 9.01%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $112,500 | - |
| Families | $100,150 | $117,096 |
| Households | $77,634 | $97,335 |
| Non Families | $46,542 | $57,899 |
Average Income
Median Household Income
Poverty Rate
