Market insights · Iowa
Black Hawk County, IA: growth, migration and housing
Black Hawk County has 131,532 residents, up 0.4% since 2020 (+0.0% in the last year). In 2022–2023, 2,851 households moved in and 2,876 moved out (-25 net), while a net $20.0M of income left. Median household income is $66,417, the median home $188,900 and median rent $989 a month.
In Iowa: 29th of 99 counties for 5-year population growth · 23rd of 99 counties for net in-migration (per resident) · 75th of 99 counties for median household income · 26th of 99 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Black Hawk County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Bremer County, IA | 200 | $10.8M |
| Linn County, IA | 143 | $5.6M |
| Polk County, IA | 127 | $6.7M |
| Buchanan County, IA | 123 | $5.7M |
| Grundy County, IA | 113 | $6.3M |
| Butler County, IA | 87 | $4.2M |
| Tama County, IA | 67 | $4.3M |
| Johnson County, IA | 63 | $3.1M |
Where leavers went
Top counties by households leaving Black Hawk County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Polk County, IA | 244 | $12.3M |
| Bremer County, IA | 208 | $12.5M |
| Linn County, IA | 176 | $9.3M |
| Buchanan County, IA | 99 | $6.2M |
| Grundy County, IA | 91 | $6.1M |
| Johnson County, IA | 80 | $3.6M |
| Butler County, IA | 77 | $3.9M |
| Dallas County, IA | 70 | $5.0M |
BizyFi in Black Hawk County
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Sources: U.S. Census Bureau population estimates (vintage 2025), American Community Survey 5-year (2024), and IRS Statistics of Income county-to-county migration data (2022–2023). Migration counts are tax returns (roughly households) moving between U.S. counties; the IRS suppresses very small flows. Growth rates, per-1,000 figures, rent share and state ranks are BizyFi calculations. Data updated 2026-10-17. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.