Saint Clair County · Official 2025 state millage

Clay Township vs Riley Township: property taxes compared

Riley Township is the cheaper of the two. Its lowest homestead rate is 25.0808 mills against Clay Township's 25.2550 — about $30 a year less on a $350,000 home at the uncapped taxable value.

Side by side

MunicipalityHomestead millsCounty rank$250,000$350,000$500,000
Riley Township25.0808–28.47549 of 31$3,135$4,389$6,270
Clay Township25.255010 of 31$3,157$4,420$6,314

Dollar columns are the annual homestead bill at the uncapped taxable value — roughly half the purchase price. Multi-district cities show their full rate range; the rank and dollar figures use each city's lowest district.

What the difference costs over time

Held for 10 years, that gap compounds to $305 at today's rates on a $350,000 home — before any millage change. At $250,000 the annual difference is $22; at $500,000 it is $44. The gap scales with price, so it matters more at the top of each city's market than at the bottom.

Choosing the district can matter more than choosing the city. Inside Riley Township alone the homestead rate runs 25.0808 to 28.4754 mills — a $594 annual swing on a $350,000 home, wider than the $30 gap between the two cities. Two houses on the same street can sit either side of that line.

All figures use each city's lowest homestead rate at the uncapped taxable value — roughly half the purchase price — from the Michigan Department of Treasury's 2025 Total Rates report. A non-homestead property adds about 18 mills on top in either city.

Common questions

Is Clay Township or Riley Township cheaper for property taxes?

Riley Township is the cheaper of the two. Its lowest homestead rate is 25.0808 mills against Clay Township's 25.2550 — about $30 a year less on a $350,000 home at the uncapped taxable value.

How much more are property taxes in Clay Township than Riley Township?

About $30 a year on a $350,000 home — 25.2550 mills versus 25.0808 at each city's lowest homestead rate, using the official 2025 Michigan Treasury millage report.

Do Clay Township and Riley Township share any school districts?

No. Clay Township and Riley Township draw from different school districts, so a move between them changes both the city millage and the school levy underneath it.

Will my bill match what the listing shows?

Usually not, in either city. Michigan taxable value uncaps the year after a sale and resets to roughly half the purchase price, so the seller's capped bill on the listing is almost always lower than what you will pay.