Market insights · Illinois
Stephenson County, IL: growth, migration and housing
Stephenson County has 43,220 residents, down 3.0% since 2020 (-0.5% in the last year). In 2022–2023, 881 households moved in and 918 moved out (-37 net), while a net $9.6M of income left. Median household income is $64,043, the median home $134,900 and median rent $798 a month.
In Illinois: 72nd of 102 counties for 5-year population growth · 34th of 102 counties for net in-migration (per resident) · 64th of 102 counties for median household income · 51st of 102 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Stephenson County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Winnebago County, IL | 161 | $7.2M |
| Ogle County, IL | 58 | $2.8M |
| Cook County, IL | 57 | $3.1M |
| Green County, WI | 45 | $1.8M |
| Dane County, WI | 37 | $1.8M |
| Carroll County, IL | 33 | $1.2M |
| Jo Daviess County, IL | 33 | $1.9M |
| Rock County, WI | 23 | $0.9M |
Where leavers went
Top counties by households leaving Stephenson County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Winnebago County, IL | 142 | $7.7M |
| Cook County, IL | 50 | $2.4M |
| Ogle County, IL | 47 | $2.8M |
| Green County, WI | 44 | $2.0M |
| Carroll County, IL | 43 | $2.7M |
| Jo Daviess County, IL | 34 | $2.2M |
| Dane County, WI | 34 | $1.7M |
| Rock County, WI | 20 | $1.0M |
BizyFi in Stephenson County
Fewer than 3 companies in the BizyFi directory are based here. Search them on the company map (company names with a free account), or browse Illinois companies.
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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.