Rock County's estimated 2025 population is 9,545 with a growth rate of -0.03% in the past year according to the most recent United States census data. Rock County is the 70th largest county in Minnesota. The 2010 population was 9,658 and has seen a growth of -1.17% since that time.
Data after 2023 is projected based on recent change
The racial composition of Rock County includes 94.15% White, and smaller percentages for Asian, other race, Native American, Black or African American and multiracial populations.
White (94.2%)
Two or more races (3.9%)
Asian (0.6%)
Other race (0.6%)
Native American (0.6%)
Black or African American (0.2%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 9,065 | 94.15% |
| Two or more races | 374 | 3.88% |
| Asian | 59 | 0.61% |
| Other race | 57 | 0.59% |
| Native American | 56 | 0.58% |
| Black or African American | 17 | 0.18% |
Married
Widowed
Divorced
Separated
Never Married
Rock County's average per capita income is $47,485. Household income levels show a median of $70,698. The poverty rate stands at 9.48%.
Name | Median | Mean |
|---|---|---|
| Married Families | $101,627 | - |
| Families | $95,000 | $108,174 |
| Households | $70,698 | $91,836 |
| Non Families | $37,468 | $56,131 |
Average Income
Median Household Income
Poverty Rate
