St. Clair County, MI real estate

What the numbers say

St. Clair County, MI real estate at a glance

By AstroCore · Realtor.com, US Census and Freddie Mac data

In September 2026, the median home in St. Clair County listed for $324,900, up 5.7% from a year earlier. That is 8% above the Michigan median of $299,900.

Homes spent a median of 52 days on the market, slower than 43 days a year ago. That makes St. Clair County the #28 fastest-selling of 34 Michigan counties we track.

Homeowners in St. Clair County pay a median of $2,562 a year in property taxes on a median home value of $224,600, an effective rate of about 1.14%. The Michigan average is 1.25%, which makes St. Clair County the #51 lowest-tax of 83 counties in the state with published tax data.

Renters pay a median of $1,029 a month, and $1,013 for a two-bedroom. At today's prices a typical home costs about 26 times a year's rent, which generally favors renting over buying in the short term.

With 20% down and today's 7.24% average 30-year rate, the monthly payment on a $325,000 home here comes to about $2,216 including property tax and insurance. Lenders typically want that to be under 28% of income, which works out to roughly $95,000 a year (the median household here earns $71,270).