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County tax profile · 2026 · Census ACS + IRS data

Property Tax & Income in Jefferson County, Illinois

Jefferson County has an effective property tax rate of 1.71%. On the median home value of $126,000, that's roughly $2,148 per year. Median household income is $63,118.

Effective Property Tax Rate1
1.71%
median tax $2,148 ÷ median home $126,000
Median Home Value1
$126,000
owner-occupied
Median Household Income1
$63,118
per-capita $33,038
Est. Annual Tax on Median Home1
$2,148
at 1.71% 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.

MetricJefferson CountyIllinois (state context)
Effective property tax rate11.71%1.80%
Median home value1$126,000—
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 Jefferson County, IL

In Jefferson County, Illinois, the median home value sits at $126,000, with an annual property tax bill of about $2,148 based on an effective rate of 1.705%. That rate falls below the statewide median of 1.804%, and the county ranks 63rd out of 102 Illinois counties for property tax rate. Against the national median of 0.794%, though, the county's rate is more than double. Households earning the median income of $63,118 would owe roughly 3.4% of that in real-estate taxes each year. Bluford, Bonnie, and Dix are among the communities here, with Bluford being the largest. For buyers weighing affordability, the combination of below-state-average tax rates and a median home value well under many Illinois markets could make this county an appealing option.

Frequently asked questions

What is the property tax rate in Jefferson County, IL?
The effective rate is 1.71% — meaning the median tax bill equals about 1.71% of the median home value.
How much are property taxes on a median home?
On the median home ($126,000), the estimated annual bill is about $2,148.
Is Jefferson 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 Jefferson 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 Jefferson 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.