Market insights · Iowa
Mahaska County, IA: growth, migration and housing
Mahaska County has 21,880 residents, down 1.2% since 2020 (-0.1% in the last year). In 2022–2023, 509 households moved in and 549 moved out (-40 net), while a net $5.8M of income left. Median household income is $70,940, the median home $157,800 and median rent $793 a month.
In Iowa: 56th of 99 counties for 5-year population growth · 50th of 99 counties for net in-migration (per resident) · 52nd of 99 counties for median household income · 54th of 99 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Mahaska County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Marion County, IA | 85 | $5.6M |
| Wapello County, IA | 63 | $3.1M |
| Polk County, IA | 43 | $2.9M |
| Keokuk County, IA | 28 | $1.2M |
Where leavers went
Top counties by households leaving Mahaska County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Marion County, IA | 87 | $7.5M |
| Wapello County, IA | 65 | $3.7M |
| Polk County, IA | 57 | $2.9M |
| Jasper County, IA | 26 | $1.1M |
| Keokuk County, IA | 22 | $0.9M |
BizyFi in Mahaska County
Fewer than 3 companies in the BizyFi directory are based here. Search them on the company map (company names with a free account), or browse Iowa companies.
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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.