Market insights · Illinois
Sangamon County, IL: growth, migration and housing
Sangamon County has 194,170 residents, down 1.0% since 2020 (+0.1% in the last year). In 2022–2023, 3,586 households moved in and 3,918 moved out (-332 net), while a net $61.2M of income left. Median household income is $75,357, the median home $176,300 and median rent $983 a month.
In Illinois: 32nd of 102 counties for 5-year population growth · 52nd of 102 counties for net in-migration (per resident) · 25th of 102 counties for median household income · 24th of 102 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Sangamon County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Cook County, IL | 215 | $10.2M |
| Morgan County, IL | 158 | $7.3M |
| Menard County, IL | 145 | $8.1M |
| Christian County, IL | 144 | $12.3M |
| Macoupin County, IL | 134 | $6.9M |
| Macon County, IL | 130 | $7.3M |
| Logan County, IL | 91 | $5.0M |
| McLean County, IL | 82 | $4.1M |
Where leavers went
Top counties by households leaving Sangamon County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Cook County, IL | 246 | $13.9M |
| Christian County, IL | 160 | $9.3M |
| Menard County, IL | 144 | $7.9M |
| Macoupin County, IL | 131 | $6.4M |
| Macon County, IL | 119 | $5.4M |
| Morgan County, IL | 118 | $5.7M |
| Logan County, IL | 100 | $5.0M |
| Madison County, IL | 93 | $6.0M |
BizyFi in Sangamon 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.