Market insights · Iowa
Polk County, IA: growth, migration and housing
Polk County has 516,546 residents, up 4.8% since 2020 (+0.6% in the last year). In 2022–2023, 12,803 households moved in and 12,322 moved out (+481 net), while a net $10.5M of income left. Median household income is $83,576, the median home $262,100 and median rent $1,149 a month.
In Iowa: 3rd of 99 counties for 5-year population growth · 7th of 99 counties for net in-migration (per resident) · 9th of 99 counties for median household income · 5th of 99 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Polk County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Dallas County, IA | 2,125 | $180.5M |
| Story County, IA | 863 | $50.4M |
| Warren County, IA | 648 | $36.1M |
| Jasper County, IA | 337 | $17.5M |
| Johnson County, IA | 276 | $12.7M |
| Linn County, IA | 253 | $13.5M |
| Black Hawk County, IA | 244 | $12.3M |
| Marion County, IA | 179 | $9.9M |
Where leavers went
Top counties by households leaving Polk County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Dallas County, IA | 2,531 | $210.0M |
| Warren County, IA | 843 | $61.4M |
| Story County, IA | 607 | $31.1M |
| Jasper County, IA | 309 | $18.0M |
| Cook County, IL | 228 | $14.1M |
| Johnson County, IA | 227 | $11.1M |
| Maricopa County, AZ | 192 | $14.0M |
| Hennepin County, MN | 171 | $10.5M |
BizyFi in Polk County
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.