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County tax profile · 2026 · Census ACS + IRS data

Property Tax & Income in Douglas County, Illinois

Douglas County has an effective property tax rate of 1.70%. On the median home value of $150,400, that's roughly $2,554 per year. Median household income is $77,320.

Effective Property Tax Rate1
1.70%
median tax $2,554 ÷ median home $150,400
Median Home Value1
$150,400
owner-occupied
Median Household Income1
$77,320
per-capita $36,634
Est. Annual Tax on Median Home1
$2,554
at 1.70% 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.

MetricDouglas CountyIllinois (state context)
Effective property tax rate11.70%1.80%
Median home value1$150,400—
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 Douglas County, IL

Douglas County offers a relatively affordable entry point for Illinois homebuyers, with a median home value of $150,400 and median annual property taxes of $2,554. The effective rate of 1.698% sits below the statewide median of 1.804%, and the county ranks 64th of 102 Illinois counties on this measure. Against the national median of 0.794%, Illinois taxes run high overall, so buyers here should weigh that broader picture. Households earning the median income of $77,320 would owe roughly 3.3% of that in annual property taxes. Per-capita income stands at $36,634. Communities like Atwood, Camargo, and Murdock anchor this rural county, where lower home prices help offset the state's steeper tax rates.

Frequently asked questions

What is the property tax rate in Douglas County, IL?
The effective rate is 1.70% — meaning the median tax bill equals about 1.70% of the median home value.
How much are property taxes on a median home?
On the median home ($150,400), the estimated annual bill is about $2,554.
Is Douglas 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 Douglas 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 Douglas 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.