St. Clair is taxed at 38.9814 mills across 1 school district. That is 11.92 mills above the St. Clair County median and 6.38 mills above the Southeast Michigan median — the 26th lowest of 31 municipalities in the county, and 157 of 236 region-wide.
| School district | Homestead | Non-homestead | $250,000 | $350,000 | $500,000 |
|---|---|---|---|---|---|
| East China Twp School District | 38.9814 | 56.9814 | $4,873 | $6,822 | $9,745 |
Homestead (PRE) applies to your primary residence. Non-homestead applies to rentals and second homes. Dollar columns are the annual bill at the uncapped taxable value — half the purchase price — at the homestead rate.
| Municipality | Lowest millage | Annual tax on $350,000 |
|---|---|---|
| Brockway Township | 28.6411 | $5,012 |
| Port Huron Township | 30.9408 | $5,415 |
| Algonac | 37.2823 | $6,524 |
| Marine City | 38.1132 | $6,670 |
| St. Clair | 38.9814 | $6,822 |
| Marysville | 39.9654 | $6,994 |
| Port Huron | 41.3099 | $7,229 |
| Richmond | 41.9639 | $7,344 |
| Memphis | 44.2314 | $7,740 |
← Marine City (lower) · Marysville (higher) →
St. Clair is taxed at 38.9814 mills for a homestead (principal residence) under the official 2025 Michigan Department of Treasury millage report. On a $350,000 home at the uncapped taxable value that is about $6,822 a year.
No. All of St. Clair sits in East China Twp School District, so the millage is 38.9814 at every address in the municipality. Your bill still changes after you buy, because it is recalculated on the uncapped taxable value rather than the seller's capped one.
About $6,822 a year at the homestead rate. Michigan taxes the taxable value, not the sale price, and after a sale that value uncaps to roughly half what you paid — so $350,000 is taxed on about $175,000.
Because the figure on the listing is the seller's. Michigan caps annual taxable-value growth while an owner keeps the property, and that cap is removed the year after it sells. The longer the seller owned it, the further their bill sits below yours.
It is the 26 lowest of 31 municipalities in St. Clair County and 157 of 236 across the eight-county region — 11.92 mills above the county median.
Michigan taxable value uncaps the year after a sale and resets to roughly half the purchase price. The calculator below is already set to St. Clair — enter a price and the seller's current taxable value.
When a Michigan home changes hands, its taxable value uncaps the following year and resets to roughly half the sale price. Buyers routinely get blindsided by a bill that's thousands higher than the listing showed. Here's your actual number.
Enter the purchase price and the property's current taxable value (it's on the listing, the assessor's site, or we'll pull it for you).