Market insights · Iowa
Buchanan County, IA: growth, migration and housing
Buchanan County has 20,883 residents, up 1.3% since 2020 (+0.8% in the last year). In 2022–2023, 415 households moved in and 500 moved out (-85 net), while a net $1.6M of income left. Median household income is $78,236, the median home $176,000 and median rent $848 a month.
In Iowa: 17th of 99 counties for 5-year population growth · 76th of 99 counties for net in-migration (per resident) · 17th of 99 counties for median household income · 35th of 99 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Buchanan County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Black Hawk County, IA | 99 | $6.2M |
| Fayette County, IA | 54 | $2.1M |
| Linn County, IA | 46 | $2.6M |
| Benton County, IA | 21 | $1.2M |
| Delaware County, IA | 20 | $0.9M |
Where leavers went
Top counties by households leaving Buchanan County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Black Hawk County, IA | 123 | $5.7M |
| Linn County, IA | 65 | $4.6M |
| Fayette County, IA | 62 | $2.9M |
| Delaware County, IA | 23 | $1.1M |
| Bremer County, IA | 21 | $0.8M |
| Johnson County, IA | 20 | $1.6M |
BizyFi in Buchanan 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.