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County tax profile · 2026 · Census ACS + IRS data

Property Tax & Income in Will County, Illinois

Will County has an effective property tax rate of 2.24%. On the median home value of $319,600, that's roughly $7,173 per year. Median household income is $109,984.

Effective Property Tax Rate1
2.24%
median tax $7,173 ÷ median home $319,600
Median Home Value1
$319,600
owner-occupied
Median Household Income1
$109,984
per-capita $47,516
Est. Annual Tax on Median Home1
$7,173
at 2.24% 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.

MetricWill CountyIllinois (state context)
Effective property tax rate12.24%1.80%
Median home value1$319,600—
State income tax3top rate 4.95%top rate 4.95%
State sales tax38.98% combined8.98% 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 Will County, IL

In Will County, Illinois, the median home value sits at $319,600, and the median annual property tax bill comes to $7,173. That reflects an effective rate of 2.244%, which runs above Illinois's statewide median of 1.804% and well past the national figure of 0.794%. Among the state's 102 counties, Will County ranks 9th for property tax rate. For buyers weighing a move to Joliet or nearby Crest Hill and Shorewood, the tax load is a real factor in the monthly cost of ownership. A median household income of $109,984 helps offset that burden, though per-capita income of $47,516 shows the county's earnings are unevenly spread. Compared with cheaper-tax parts of Illinois, a buyer here pays a premium for the location, so budgeting for taxes alongside the purchase price matters.

Frequently asked questions

What is the property tax rate in Will County, IL?
The effective rate is 2.24% — meaning the median tax bill equals about 2.24% of the median home value.
How much are property taxes on a median home?
On the median home ($319,600), the estimated annual bill is about $7,173.
Is Will County's rate high or low?
Compare it to the state median of 1.80% 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 Will 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 Will 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.