Market insights · Iowa
Mills County, IA: growth, migration and housing
Mills County has 14,793 residents, up 2.6% since 2020 (+0.3% in the last year). In 2022–2023, 397 households moved in and 386 moved out (+11 net), bringing in a net $3.4M of income. Median household income is $90,753, the median home $237,800 and median rent $959 a month.
In Iowa: 10th of 99 counties for 5-year population growth · 9th of 99 counties for net in-migration (per resident) · 4th of 99 counties for median household income · 10th of 99 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Mills County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Pottawattamie County, IA | 84 | $4.3M |
| Douglas County, NE | 60 | $5.1M |
| Sarpy County, NE | 55 | $4.1M |
| Fremont County, IA | 23 | $2.0M |
Where leavers went
Top counties by households leaving Mills County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Pottawattamie County, IA | 81 | $4.5M |
| Douglas County, NE | 51 | $2.7M |
| Sarpy County, NE | 46 | $2.3M |
| Montgomery County, IA | 22 | $1.4M |
BizyFi in Mills 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.