Market insights · Iowa
Union County, IA: growth, migration and housing
Union County has 11,829 residents, down 2.5% since 2020 (-0.8% in the last year). In 2022–2023, 263 households moved in and 275 moved out (-12 net), while a net $0.9M of income left. Median household income is $57,772, the median home $122,000 and median rent $721 a month.
In Iowa: 80th of 99 counties for 5-year population growth · 37th of 99 counties for net in-migration (per resident) · 98th of 99 counties for median household income · 86th of 99 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Union County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Polk County, IA | 34 | $1.4M |
| Adams County, IA | 26 | $1.1M |
| Ringgold County, IA | 23 | $0.7M |
| Adair County, IA | 22 | $1.2M |
Where leavers went
Top counties by households leaving Union County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Polk County, IA | 50 | $2.1M |
BizyFi in Union 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.