Market insights · Illinois
LaSalle County, IL: growth, migration and housing
LaSalle County has 107,773 residents, down 1.5% since 2020 (-0.1% in the last year). In 2022–2023, 2,277 households moved in and 2,322 moved out (-45 net), while a net $12.0M of income left. Median household income is $73,045, the median home $161,900 and median rent $928 a month.
In Illinois: 37th of 102 counties for 5-year population growth · 28th of 102 counties for net in-migration (per resident) · 32nd of 102 counties for median household income · 31st of 102 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to LaSalle County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Will County, IL | 184 | $12.6M |
| Bureau County, IL | 179 | $7.6M |
| Kendall County, IL | 172 | $11.4M |
| Cook County, IL | 170 | $10.0M |
| Grundy County, IL | 138 | $7.7M |
| Livingston County, IL | 123 | $5.6M |
| DeKalb County, IL | 118 | $7.1M |
| Kane County, IL | 100 | $5.5M |
Where leavers went
Top counties by households leaving LaSalle County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Bureau County, IL | 205 | $8.7M |
| Cook County, IL | 138 | $8.7M |
| Will County, IL | 115 | $8.0M |
| DeKalb County, IL | 114 | $5.9M |
| Livingston County, IL | 111 | $5.1M |
| Kendall County, IL | 103 | $7.0M |
| Grundy County, IL | 95 | $7.8M |
| Kane County, IL | 77 | $4.2M |
BizyFi in LaSalle 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.