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County tax profile · 2026 · Census ACS + IRS data

Property Tax & Income in Hamilton County, Illinois

Hamilton County has an effective property tax rate of 1.33%. On the median home value of $113,700, that's roughly $1,512 per year. Median household income is $65,746.

Effective Property Tax Rate1
1.33%
median tax $1,512 ÷ median home $113,700
Median Home Value1
$113,700
owner-occupied
Median Household Income1
$65,746
per-capita $39,790
Est. Annual Tax on Median Home1
$1,512
at 1.33% 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.

MetricHamilton CountyIllinois (state context)
Effective property tax rate11.33%1.80%
Median home value1$113,700—
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 Hamilton County, IL

In Hamilton County, Illinois, buying a home is comparatively affordable on both fronts — price and tax. The median home value sits at $113,700, and the annual real-estate tax bill on that median home comes to about $1,512, based on an effective rate of 1.330%. That rate falls below Illinois's statewide median of 1.804%, and it ranks 96th out of the state's 102 counties, so taxes here land near the lower end for Illinois. Households earning the median income of $65,746 would owe roughly 2.3% of that in annual property taxes. The surrounding communities of Broughton, Dahlgren, and Dale share in this setting. Compared with the national median effective rate of 0.794%, Hamilton County's rate is higher, so buyers moving from elsewhere should expect to pay somewhat more in taxes even though local home prices stay low.

Frequently asked questions

What is the property tax rate in Hamilton County, IL?
The effective rate is 1.33% — meaning the median tax bill equals about 1.33% of the median home value.
How much are property taxes on a median home?
On the median home ($113,700), the estimated annual bill is about $1,512.
Is Hamilton 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 Hamilton 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 Hamilton 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.