Market insights · Illinois
Madison County, IL: growth, migration and housing
Madison County has 263,110 residents, down 1.0% since 2020 (-0.1% in the last year). In 2022–2023, 5,493 households moved in and 5,341 moved out (+152 net), while a net $8.1M of income left. Median household income is $75,793, the median home $173,000 and median rent $1,024 a month.
In Illinois: 30th of 102 counties for 5-year population growth · 13th of 102 counties for net in-migration (per resident) · 23rd of 102 counties for median household income · 25th of 102 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Madison County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| St. Clair County, IL | 1,146 | $59.2M |
| St. Louis County, MO | 555 | $30.9M |
| Macoupin County, IL | 275 | $13.0M |
| St. Louis city, MO | 273 | $15.2M |
| Jersey County, IL | 203 | $9.3M |
| St. Charles County, MO | 182 | $10.8M |
| Clinton County, IL | 118 | $8.1M |
| Jefferson County, MO | 94 | $4.6M |
Where leavers went
Top counties by households leaving Madison County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| St. Clair County, IL | 983 | $44.6M |
| St. Louis County, MO | 563 | $35.0M |
| St. Louis city, MO | 295 | $14.1M |
| Macoupin County, IL | 293 | $14.6M |
| St. Charles County, MO | 205 | $15.6M |
| Jersey County, IL | 181 | $9.6M |
| Clinton County, IL | 101 | $5.9M |
| Bond County, IL | 87 | $4.9M |
BizyFi in Madison 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.