Market insights · Michigan
Sanilac County, MI: growth, migration and housing
Sanilac County has 40,083 residents, down 1.0% since 2020 (-0.4% in the last year). In 2022–2023, 892 households moved in and 902 moved out (-10 net), bringing in a net $8.6M of income. Median household income is $58,863, the median home $168,300 and median rent $807 a month.
In Michigan: 70th of 83 counties for 5-year population growth · 57th of 83 counties for net in-migration (per resident) · 61st of 83 counties for median household income · 51st of 83 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Sanilac County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| St. Clair County, MI | 217 | $9.8M |
| Macomb County, MI | 132 | $10.3M |
| Lapeer County, MI | 82 | $3.8M |
| Huron County, MI | 56 | $4.5M |
| Oakland County, MI | 55 | $4.3M |
| Tuscola County, MI | 51 | $1.6M |
| Wayne County, MI | 38 | $2.6M |
| Genesee County, MI | 24 | $0.9M |
Where leavers went
Top counties by households leaving Sanilac County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| St. Clair County, MI | 204 | $8.6M |
| Macomb County, MI | 94 | $3.7M |
| Lapeer County, MI | 81 | $3.6M |
| Tuscola County, MI | 66 | $4.5M |
| Oakland County, MI | 42 | $2.5M |
| Huron County, MI | 36 | $1.3M |
| Genesee County, MI | 27 | $1.6M |
| Saginaw County, MI | 24 | $1.3M |
BizyFi in Sanilac 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.