St. Clair property taxes & housing data
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.
Rates by school district
| 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.
How St. Clair compares in St. Clair County
| 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) →
For sale in St. Clair right now
34 active listings in St. Clair — the 6 newest below. Remember: every one of them uncaps the year after closing, so the bill you should budget is the uncapped one above, not the seller's.
$499,900
146 Brown ST · St Clair
4 bd · 3 ba · 2,849 sqft
Listing courtesy of KW Platinum
$239,900
1354 S Riverside AVE · St Clair
3 bd · 2 ba · 2,372 sqft
Listing courtesy of Realty Executives Home Towne
$299,900
5034 Yankee RD · St Clair Township
3 bd · 1 ba · 1,278 sqft
Listing courtesy of St. Clair Realty
$625,000
77 Richman RD · St Clair Township
3 bd · 3 ba · 2,269 sqft
Listing courtesy of Sine & Monaghan Realtors LLC Algonac
$599,999
4119 V Achatz DR · St Clair Township
4 bd · 4 ba · 2,900 sqft
Listing courtesy of St. Clair Realty
$379,900
1003 Brown ST # Units 1-20 · St Clair
2 bd · 2 ba · 1,200 sqft
Listing courtesy of @properties Christie's Int'l RE Port Huron
IDX provided courtesy of Realcomp II Ltd. via Match Realty LLC and MiRealSource, Realcomp II Ltd, ©2026 Realcomp II Ltd. Shareholders. The accuracy of all information, regardless of source, is not guaranteed or warranted. All information should be independently verified. Listings refreshed 2026-11-03T10:57+00:00; refreshed at least twice daily.
Compare St. Clair with another community
St. Clair has 11 side-by-side comparisons, 9 of them with a community that shares a school district — same schools, different bill. Dollar columns are the annual homestead bill on a $350,000 home at the uncapped taxable value, and the last column is the difference against St. Clair.
| Comparison | Their lowest millage | Annual tax on $350,000 | vs St. Clair |
|---|---|---|---|
| St. Clair vs Cottrellville Township · same schools | 23.5254 | $4,117 | −$2,705 |
| St. Clair vs Saint Clair Township · same schools | 23.5755 | $4,126 | −$2,696 |
| St. Clair vs Columbus Township · same schools | 23.5871 | $4,128 | −$2,694 |
| St. Clair vs China Township · same schools | 24.0554 | $4,210 | −$2,612 |
| St. Clair vs Casco Township · same schools | 24.5978 | $4,305 | −$2,517 |
| St. Clair vs East China Township · same schools | 27.2762 | $4,773 | −$2,048 |
| St. Clair vs Ira Township · same schools | 27.5526 | $4,822 | −$2,000 |
| St. Clair vs Port Huron | 41.3099 | $7,229 | +$407 |
| St. Clair vs Algonac | 37.2823 | $6,524 | −$297 |
| St. Clair vs Marysville · same schools | 39.9654 | $6,994 | +$172 |
| St. Clair vs Marine City · same schools | 38.1132 | $6,670 | −$152 |
Look up, pay and appeal your St. Clair taxes
St. Clair bills twice a year. The summer bill is issued July 1 and the winter bill December 1; most communities make them due September 14 and February 14, and anything still unpaid on March 1 moves to the county treasurer as delinquent, with interest added monthly. Both bills are collected by the St. Clair treasurer, so the balance on a specific parcel is on the city or township site first (most of Southeast Michigan uses BS&A Online for this) and on the county site once it is late.
- St. Clair County property tax & maps search — parcel and tax search for Saint Clair County addresses.
- St. Clair County Treasurer — where a bill goes once it is delinquent: balances, payment plans and the hardship deferral.
- Estimate a bill before you look one up — the figure on the current owner's statement is capped; this gives you the uncapped one.
Appealing the assessment
Assessment notices go out in late February. If the assessed value is more than half of what the house would actually sell for, the appeal runs in two steps and the first one cannot be skipped: the March Board of Review in St. Clair (dates and the petition form are on the assessor's notice), then, if the board does not move, a petition to the Michigan Tax Tribunal by July 31 for residential property. The July and December boards do not re-value: they correct qualified errors (clerical mistakes, mutual mistakes of fact, a wrong principal residence exemption) and hear poverty exemptions. A successful appeal lowers the assessed value, not the millage — the 38.9814 mills above apply to whatever value stands after it.
A home bought this year is a special case: the taxable value uncaps to the assessed value next year regardless of the appeal, so the number to check on the first notice after closing is the assessed value against the price you paid.
Common questions
What is the property tax rate in St. Clair, Michigan?
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.
Does the tax rate change by address within St. Clair?
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.
How much are property taxes on a $350,000 home in St. Clair?
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.
Why is the tax bill on a St. Clair listing lower than what I would pay?
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.
How does St. Clair compare with the rest of St. Clair County?
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.
How do I look up or pay my St. Clair property tax bill?
Summer and winter bills are collected by the St. Clair treasurer, so the balance on a parcel is on the municipality's own site (usually BS&A Online). Once a bill is delinquent — March 1 — it moves to the St. Clair County Treasurer, whose parcel search covers every address in the county.
How do I appeal my St. Clair property tax assessment?
Petition the St. Clair March Board of Review first — the dates are on the assessment notice mailed in late February — and, if that fails, the Michigan Tax Tribunal by July 31 for residential property. The board step is mandatory; the Tribunal will not hear a residential appeal that skipped it. An appeal changes the assessed value, not the millage (38.9814 mills).
Is down payment assistance available for homes in St. Clair?
Likely, but verify per program: 100% of the 35 St. Clair sales evaluated by Down Payment Resource over the last 12 months were flagged as potentially matching at least one assistance program. The flag is an indicator, not a promise — compare the programs and check your numbers.
What your St. Clair taxes become after you buy
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.
Uncapping calculator
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.
What will your tax bill be after closing?
Your taxable value uncaps the year after closing and resets to roughly half the purchase price — so a $350,000 home is taxed on about $175,000, whatever the seller was paying. Enter the price and the current taxable value below.