Property tax appeals in Grundy County, Illinois

We don't cover Grundy County, Illinois yet. We haven't researched its appeal deadlines, filing rules or evidence requirements, so this page lists none of them and our free assessment check doesn't run here.

Source: U.S. Census Bureau, American Community Survey 2020–2024Last checked January 29, 2026

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Median home value: $271,700
Median property tax paid per year: $5,420
Our coverage: Waitlist open

Not affiliated with Grundy County or any government agency. We have not verified this county's deadlines or rules.

How we verify facts

What do we know about Grundy County so far?

Published figures and state rules first, then the county topics. A county fact appears only after a person checks it against the official source; until then its topic shows as in research.

Census figuresMedian home value $271,700 · Median property tax paid per year $5,420Published data
Who hears appeals in IllinoisIllinois Property Tax Appeal BoardPublished data
Illinois: When are property tax appeal deadlines in Illinois?Verified
Illinois: Who decides property tax appeals in Illinois?Verified
Illinois: How is a property tax appeal filed in Illinois?Verified
Illinois: What evidence do Illinois review bodies accept?Verified
Who hears a Grundy County appealIn research
The filing deadlineIn research
Forms and how to fileIn research
What evidence countsIn research

How we verify facts

What do Grundy County property taxes and assessments look like?

Figures from public records and the Census, each with its source. They describe the county's homes as a group, not the value of any one home.

What do homeowners in Grundy County pay in property tax?

The median owner-occupied home in Grundy County was worth $271,700, and the median property tax its owners paid was $5,420 a year, according to the Census Bureau's American Community Survey.

Median home value: $271,700; Margin of error ±$10,409.
Median property tax paid per year: $5,420; Margin of error ±$199.
Median tax as a share of median value: 1.99%; A ratio of two medians, not a tax rate. Your own bill depends on your assessment and local levies.
Owner-occupied homes: 15,319; Margin of error ±450.

These are survey estimates of what owners reported about their own homes. They are not assessed values, not tax rates, and not an opinion of what any home is worth.

They cannot tell you whether your own assessment is fair. That takes a comparison with similar homes, which we offer only in counties we have researched.

Median home value: Grundy County compared

Grundy County$271,700
Typical Illinois county$134,650
Typical US county$185,300

Grundy County $271,700; Typical US county $185,300; Typical Illinois county $134,650

Census survey medians for owner-occupied homes. "Typical" is the middle county of the 102 in Illinois and of all US counties.Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25077.

Median property tax paid: Grundy County compared

Grundy County$5,420
Typical Illinois county$2,431
Typical US county$1,619

Grundy County $5,420 a year; Typical Illinois county $2,431 a year; Typical US county $1,619 a year

Property tax guides for Grundy County homeowners

Homestead Exemption: What It Is and How to Get ItIllinois · Grundy County
How to Lower Your Property Taxes: What to Check FirstIllinois · Grundy County

Counties next to Grundy County

Kendall County property tax appealsFree check availableNext deadline: Oct 19, 2026
LaSalle County property tax appealsWaitlist open
Will County property tax appealsWaitlist open
Livingston County property tax appealsWaitlist open
Kankakee County property tax appealsWaitlist open

Illinois property tax appeals: all counties

Where do these facts come from?

Data credits: Census ACS (public domain) · Census county adjacency (public domain)

Not affiliated with Grundy County or any government agency. Not legal advice. Not an appraisal.