Median Age in Black Hawk County, IA
ACS 2024 5-Year Estimates
35.7 years
Rank #2,908/3,222 · #95 in IA
10th
Black Hawk 35.7 years
IA 38.6 years -7.5%
US 38.9 years -8.2%
Median Age Trend
Rankings →Percentile Rank Over Time
Year-over-Year Age Change
National Distribution
How Black Hawk County's median age of 35.7 years compares to all 3,222 U.S. counties. Values range from 21.4 years to 86.2 years.
Distribution of Median Age Across All Counties
Ranking Context
Counties ranked closest to Black Hawk County for median age.
Nearby Rankings
Full ranking →| #2,905 | Kittitas County, WA | 35.8 years |
| #2,906 | Eau Claire County, WI | 35.8 years |
| #2,907 | Sumter County, AL | 35.7 years |
| #2,908 | Black Hawk County, IA | 35.7 years |
| #2,909 | Nobles County, MN | 35.7 years |
| #2,910 | Sarpy County, NE | 35.7 years |
| #2,911 | Elko County, NV | 35.7 years |
About Median Age
Black Hawk County, Iowa has a median age of 35.7 years, ranking #2,908 of 3,222 counties nationwide — 8.2% below the national value of 38.9 years. Within Iowa, it ranks #95 of 99. This places it in the 10th percentile nationally.
The median age of the total population. Source: U.S. Census Bureau, American Community Survey 2024 5-Year Estimates. All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.