Rock County's 2026 population is estimated at 1,205, reflecting a -1.47% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Rock County is the 80th largest county in Nebraska. The 2010 population was 1,524 and has grown -20.93% since 2010.
Data after 2023 is projected based on recent change
Overall: 49.4 years
Female: 51.3 years
Male: 45.5 years
There are 1,056 adults, (381 of whom are seniors) in Rock County.
Female: 661 (50.1%)
Male: 658 (49.9%)
The racial composition of Rock County includes 98.56% White, and smaller percentages for Two or more races, other race, Black or African American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 1,300 | 98.56% |
| Two or more races | 15 | 1.14% |
| Other race | 3 | 0.23% |
| Black or African American | 1 | 0.08% |
Rock County 's average per capita income is $40,263. Household income levels show a median of $58,125. The poverty rate stands at 10.82%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $86,250 | - |
| Families | $74,875 | $99,993 |
| Households | $58,125 | $79,759 |
| Non Families | $34,375 | $42,495 |
Average Income
Median Household Income
Poverty Rate
