How many people live in Black Hawk County, IA?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 132,300 people living in Black Hawk County, IA. That makes Black Hawk County the fifth-most populous county in Iowa. It is home to 4.1% of people living in the state.
132K
population of Black Hawk County, IA (2024)
4.1%
County share of the Iowa population (2024)
About 132,300 people lived in Black Hawk County, IA in 2024.
Population estimates, 2000–2024
What are Black Hawk County, IA’s age demographics?
About 24,100 Black Hawk County residents are aged 65 and older in 2024. That represents 18.2% of its population. For comparison, the age group represents 18.9% of Iowa’s population and 18% in the US overall.
Another 29,000 Black Hawk County residents, or 21.9% of the population, were children under 18. For comparison, the age group represents 22.5% of Iowa’s population and 21.6% in the US overall.
A higher share of Black Hawk County, IA's population is aged 18–24 than the US as a whole.
Population estimates by age group, (2024)
What are Black Hawk County, IA’s racial and ethnic demographics?
Non-Hispanic white residents make up 77.4% of the Black Hawk County, IA population, higher than the national share of 57.5%. Black Hawk County, IA also has a larger share of people identifying as non-Hispanic two or more races (2.8%) than the US overall (2.5%).
In contrast, Black Hawk County’s Hispanic population accounts for 5.7%, below the 20% nationwide, and the non-Hispanic Asian population makes up 2.8% of the county, compared with 6.5% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Black Hawk County, IA has a higher share of a non-Hispanic Black or African American population than Iowa as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Black Hawk County, IA is Waterloo with about 67,500 residents in 2024.
Cities and towns in Black Hawk County, IA ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Waterloo | 67,477 |
| 2. | Cedar Falls | 41,417 |
| 3. | Evansdale | 4,515 |
| 4. | Hudson | 2,916 |
| 5. | La Porte City | 2,267 |
| 6. | Elk Run Heights | 1,061 |
| 7. | Dunkerton | 840 |
| 8. | Gilbertville | 792 |
| 9. | Raymond | 754 |
| 10. | Jesup (pt.) | 198 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
