Rock River is located in Alger County, Michigan. Rock River has a 2025 population of 1,229 . Rock River is currently declining at a rate of -0.32% annually and its population has decreased by -1.05% since the most recent census, which recorded a population of 1,242 in 2020.
The average household income in Rock River is $81,391 with a poverty rate of 14.89%. The median age in Rock River is 45.7 years: 49.3 years for males, and 43.4 years for females. For every 100 females there are 89.8 males.
Data after 2023 is projected based on recent change
The racial composition of Rock River includes 97.26% White, and smaller percentages for Two or more races, Black or African American and multiracial populations.
White (97.26%)
Two or more races (2.64%)
Black or African American (0.1%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 995 | 97.26% |
| Two or more races | 27 | 2.64% |
| Black or African American | 1 | 0.1% |
Married
Widowed
Divorced
Separated
Never Married
Rock River's average per capita income is $41,111. Household income levels show a median of $69,917. The poverty rate stands at 14.89%.
Name | Median | Mean |
|---|---|---|
| Married Families | $95,536 | - |
| Families | $86,250 | $97,544 |
| Households | $69,917 | $81,391 |
| Non Families | $30,625 | $38,132 |
Average Income
Median Household Income
Poverty Rate