Market insights · Iowa
Delaware County, IA: growth, migration and housing
Delaware County has 17,674 residents, up 1.3% since 2020 (+0.4% in the last year). In 2022–2023, 353 households moved in and 384 moved out (-31 net), while a net $2.3M of income left. Median household income is $74,989, the median home $177,900 and median rent $764 a month.
In Iowa: 18th of 99 counties for 5-year population growth · 49th of 99 counties for net in-migration (per resident) · 28th of 99 counties for median household income · 34th of 99 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Delaware County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Dubuque County, IA | 63 | $3.2M |
| Clayton County, IA | 41 | $2.3M |
| Linn County, IA | 37 | $2.3M |
| Buchanan County, IA | 23 | $1.1M |
| Jones County, IA | 22 | $1.9M |
Where leavers went
Top counties by households leaving Delaware County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Dubuque County, IA | 68 | $3.8M |
| Linn County, IA | 65 | $3.4M |
| Clayton County, IA | 32 | $1.7M |
| Buchanan County, IA | 20 | $0.9M |
BizyFi in Delaware County
Fewer than 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.