Market insights · Iowa
Hamilton County, IA: growth, migration and housing
Hamilton County has 14,944 residents, down 0.5% since 2020 (-0.4% in the last year). In 2022–2023, 343 households moved in and 411 moved out (-68 net), while a net $4.6M of income left. Median household income is $72,432, the median home $156,400 and median rent $877 a month.
In Iowa: 40th of 99 counties for 5-year population growth · 82nd of 99 counties for net in-migration (per resident) · 41st of 99 counties for median household income · 55th of 99 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Hamilton County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Story County, IA | 64 | $4.4M |
| Webster County, IA | 39 | $1.6M |
| Wright County, IA | 26 | $1.5M |
| Polk County, IA | 23 | $1.2M |
| Boone County, IA | 20 | $1.3M |
Where leavers went
Top counties by households leaving Hamilton County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Story County, IA | 88 | $6.6M |
| Webster County, IA | 67 | $3.6M |
| Polk County, IA | 40 | $2.1M |
| Hardin County, IA | 24 | $1.5M |
| Wright County, IA | 22 | $1.0M |
BizyFi in Hamilton County
No companies in the BizyFi directory are based here yet. Search them on the company map (company names with a free account), or browse Iowa companies.
← All Iowa counties · National rankings
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.