Sanilac County, MI Demographics
Sanilac County, MI is the 40th most populous of 83 counties in Michigan, with 40,611 residents across 963 square miles. That is about 42 people per square mile.
At the 2020 census
| Population | 40,611 |
|---|---|
| Land area | 963 sq mi |
| Density | 42 / sq mi |
Data: 2020 Census · American Community Survey 2024
How Sanilac County compares to the US
We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.
Central Location: Sanilac County, MI
Measured from the county's main population center using 2020 census blocks.
We're computing the drive-time and radius areas around Sanilac County, MI — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.
Census tracts in Sanilac County, MI
| Name | Population | Sq mi | Per sq mi |
|---|---|---|---|
| Census Tract 9708 | 5,774 | 65.8 | 88 |
| Census Tract 9712 | 5,106 | 141.4 | 36 |
| Census Tract 9709 | 4,913 | 74.6 | 66 |
| Census Tract 9710 | 4,292 | 91.0 | 47 |
| Census Tract 9704 | 3,835 | 108.1 | 35 |
| Census Tract 9711 | 3,492 | 72.5 | 48 |
| Census Tract 9703 | 3,452 | 137.3 | 25 |
| Census Tract 9702 | 2,442 | 148.6 | 16 |
| Census Tract 9705 | 2,301 | 40.8 | 56 |
| Census Tract 9706 | 2,037 | 7.4 | 276 |
| Census Tract 9701 | 1,667 | 71.7 | 23 |
| Census Tract 9707 | 1,300 | 3.5 | 366 |
Related places
About this page
This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.
Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.