Black Hawk County's 2026 population is estimated at 134,686, reflecting a 0.88% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Black Hawk County is the 5th largest county in Iowa. The 2010 population was 131,164 and has grown 2.69% since 2010.
Data after 2023 is projected based on recent change
Overall: 35.7 years
Female: 36.3 years
Male: 35.2 years
There are 102,305 adults, (23,138 of whom are seniors) in Black Hawk County.
Female: 66,638 (50.8%)
Male: 64,411 (49.2%)
The racial composition of Black Hawk County includes 79.47% White, 9.26% Black or African American, and smaller percentages for Asian, other race, Native Hawaiian or Pacific Islander, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 104,148 | 79.47% |
| Black or African American | 12,135 | 9.26% |
| Two or more races | 6,664 | 5.09% |
| Asian | 3,565 | 2.72% |
| Other race | 3,191 | 2.43% |
| Native Hawaiian or Pacific Islander | 964 | 0.74% |
| Native American | 382 | 0.29% |
Black Hawk County 's average per capita income is $48,311. Household income levels show a median of $66,417. The poverty rate stands at 14.95%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $103,785 | $126,178 |
| Families | $86,857 | $109,600 |
| Households | $66,417 | $89,163 |
| Non Families | $44,259 | $58,498 |
Average Income
Median Household Income
Poverty Rate
