Market insights · Illinois
Lee County, IL: growth, migration and housing
Lee County has 32,914 residents, down 3.4% since 2020 (+0.2% in the last year). In 2022–2023, 737 households moved in and 856 moved out (-119 net), while a net $9.8M of income left. Median household income is $70,292, the median home $154,600 and median rent $894 a month.
In Illinois: 77th of 102 counties for 5-year population growth · 83rd of 102 counties for net in-migration (per resident) · 43rd of 102 counties for median household income · 36th of 102 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Lee County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Whiteside County, IL | 160 | $6.6M |
| Ogle County, IL | 118 | $6.5M |
| DeKalb County, IL | 48 | $3.0M |
| LaSalle County, IL | 30 | $1.5M |
| Winnebago County, IL | 27 | $1.1M |
| Cook County, IL | 26 | $2.7M |
| DuPage County, IL | 23 | $1.6M |
| Bureau County, IL | 20 | $1.0M |
Where leavers went
Top counties by households leaving Lee County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Whiteside County, IL | 174 | $8.1M |
| Ogle County, IL | 131 | $6.7M |
| LaSalle County, IL | 41 | $2.7M |
| DeKalb County, IL | 40 | $1.8M |
| Cook County, IL | 38 | $2.0M |
| Winnebago County, IL | 31 | $1.3M |
| Bureau County, IL | 28 | $1.3M |
BizyFi in Lee 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.