Market insights · Illinois
Whiteside County, IL: growth, migration and housing
Whiteside County has 54,121 residents, down 2.6% since 2020 (-0.6% in the last year). In 2022–2023, 1,066 households moved in and 1,082 moved out (-16 net), while a net $3.3M of income left. Median household income is $67,500, the median home $127,100 and median rent $856 a month.
In Illinois: 66th of 102 counties for 5-year population growth · 22nd of 102 counties for net in-migration (per resident) · 48th of 102 counties for median household income · 61st of 102 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Whiteside County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Lee County, IL | 174 | $8.1M |
| Clinton County, IA | 93 | $4.1M |
| Ogle County, IL | 57 | $2.6M |
| Carroll County, IL | 56 | $2.6M |
| Rock Island County, IL | 45 | $2.4M |
| Scott County, IA | 44 | $1.9M |
| Cook County, IL | 42 | $1.9M |
| Henry County, IL | 33 | $1.7M |
Where leavers went
Top counties by households leaving Whiteside County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Lee County, IL | 160 | $6.6M |
| Clinton County, IA | 91 | $4.0M |
| Rock Island County, IL | 55 | $2.6M |
| Carroll County, IL | 51 | $2.1M |
| Scott County, IA | 43 | $2.5M |
| Ogle County, IL | 42 | $2.1M |
| Cook County, IL | 34 | $1.4M |
| Bureau County, IL | 32 | $1.2M |
BizyFi in Whiteside 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.