Market insights · Iowa
Decatur County, IA: growth, migration and housing
Decatur County has 7,655 residents, down 0.9% since 2020 (-0.3% in the last year). In 2022–2023, 188 households moved in and 252 moved out (-64 net), while a net $4.8M of income left. Median household income is $59,044, the median home $113,900 and median rent $611 a month.
In Iowa: 50th of 99 counties for 5-year population growth · 98th of 99 counties for net in-migration (per resident) · 95th of 99 counties for median household income · 96th of 99 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Decatur County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Clarke County, IA | 36 | $1.7M |
Where leavers went
Top counties by households leaving Decatur County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Polk County, IA | 36 | $1.7M |
| Clarke County, IA | 30 | $1.3M |
BizyFi in Decatur 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.