Market insights · Illinois
Carroll County, IL: growth, migration and housing
Carroll County has 15,419 residents, down 1.7% since 2020 (-0.3% in the last year). In 2022–2023, 320 households moved in and 381 moved out (-61 net), bringing in a net $3.4M of income. Median household income is $60,758, the median home $114,500 and median rent $818 a month.
In Illinois: 43rd of 102 counties for 5-year population growth · 88th of 102 counties for net in-migration (per resident) · 80th of 102 counties for median household income · 70th of 102 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Carroll County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Whiteside County, IL | 51 | $2.1M |
| Stephenson County, IL | 43 | $2.7M |
| Clinton County, IA | 27 | $1.4M |
| Ogle County, IL | 24 | $1.3M |
Where leavers went
Top counties by households leaving Carroll County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Whiteside County, IL | 56 | $2.6M |
| Clinton County, IA | 42 | $1.4M |
| Stephenson County, IL | 33 | $1.2M |
BizyFi in Carroll 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.