Market insights · Iowa
Dubuque County, IA: growth, migration and housing
Dubuque County has 99,381 residents, up 0.1% since 2020 (+0.3% in the last year). In 2022–2023, 1,932 households moved in and 1,953 moved out (-21 net), while a net $7.1M of income left. Median household income is $77,630, the median home $237,300 and median rent $959 a month.
In Iowa: 33rd of 99 counties for 5-year population growth · 24th of 99 counties for net in-migration (per resident) · 21st of 99 counties for median household income · 11th of 99 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Dubuque County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Jo Daviess County, IL | 118 | $9.1M |
| Grant County, WI | 108 | $6.3M |
| Cook County, IL | 97 | $4.3M |
| Linn County, IA | 90 | $5.7M |
| Jackson County, IA | 89 | $4.8M |
| Delaware County, IA | 68 | $3.8M |
| Jones County, IA | 46 | $2.2M |
| Clayton County, IA | 45 | $3.3M |
Where leavers went
Top counties by households leaving Dubuque County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Linn County, IA | 98 | $5.2M |
| Jackson County, IA | 96 | $4.5M |
| Jo Daviess County, IL | 90 | $4.5M |
| Grant County, WI | 78 | $4.9M |
| Cook County, IL | 76 | $5.4M |
| Johnson County, IA | 69 | $2.4M |
| Dane County, WI | 69 | $3.9M |
| Polk County, IA | 66 | $4.0M |
BizyFi in Dubuque 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.