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County tax profile · 2026 · Census ACS + IRS data

Property Tax & Income in St. Clair County, Missouri

St. Clair County has an effective property tax rate of 0.61%. On the median home value of $157,100, that's roughly $966 per year. Median household income is $53,043.

Effective Property Tax Rate1
0.61%
median tax $966 ÷ median home $157,100
Median Home Value1
$157,100
owner-occupied
Median Household Income1
$53,043
per-capita $29,315
Est. Annual Tax on Median Home1
$966
at 0.61% effective rate

What you'll pay, at a glance

Property taxes are the largest local tax most homeowners pay. The effective rate measures the real tax bill as a share of home value — a more useful number than the nominal “mill rate,” because assessment practices vary county to county.

MetricSt. Clair CountyMissouri (state context)
Effective property tax rate10.61%0.70%
Median home value1$157,100—
State income tax3top rate 4.80%top rate 4.80%
State sales tax38.44% combined8.44% combined

How this is calculated

The effective property tax rate is the median real-estate tax bill divided by the median home value — both for owner-occupied homes, from the U.S. Census Bureau's American Community Survey (ACS 5-year estimates)1. Median income is also from the ACS1. Federal and state income-tax figures use IRS2 and Tax Foundation3 data.

About St. Clair County, MO

In St. Clair County, Missouri, buying a home comes with a lighter tax load than much of the country. The median home value sits at $157,100, and the annual property tax bill on that home runs about $966, based on an effective rate of 0.615 percent. That rate falls under Missouri's statewide median of 0.705 percent and well below the national median of 0.794 percent. Among the state's 115 counties, St. Clair ranks 82nd for property tax rate. Households here earn a median of $53,043, with per-capita income at $29,315. Collins, Lowry City, and Roscoe anchor the county, with Collins among the larger communities. For a buyer weighing affordability, the combination of below-average home prices and a below-average tax rate keeps ongoing ownership costs lower than in many comparable markets.

Frequently asked questions

What is the property tax rate in St. Clair County, MO?
The effective rate is 0.61% — meaning the median tax bill equals about 0.61% of the median home value.
How much are property taxes on a median home?
On the median home ($157,100), the estimated annual bill is about $966.
Is St. Clair County's rate high or low?
Compare it to the state median of 0.70% and the national average near 1.1%.
How does the effective rate differ from my mill rate?
A mill rate is the nominal levy per $1,000 of assessed value. The effective rate reflects what you actually pay after exemptions and assessments — it's the median tax bill as a share of median home value, so it better predicts your real cost.
Will a reassessment raise my tax bill?
Not necessarily. If your home's assessed value rises, your bill can go up, but only if the mill rate and exemptions stay flat. Contact the St. Clair County assessor's office to review your current assessment.
Can I appeal my property tax assessment?
Yes. Most counties allow an appeal when you believe the assessed value exceeds the market value. File with the St. Clair County assessor within the local deadline, typically with comparable sales as evidence.
Sources
[1] U.S. Census Bureau — ACS 5-Year (2023) — Median home value (B25077), median real-estate taxes (B25103), median household income (B19013), per-capita income (B19301).
[2] IRS — Statistics of Income — County income, AGI, and real-estate taxes paid.
[3] Tax Foundation — State income, sales, corporate, and estate/inheritance tax rates.