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Grundy County, Illinois: property tax rate, home values and income

Effective property tax rate

2.03%

30th highest of 102 counties in Illinois

Median home value

$259,200

9th highest in Illinois

Median household income

$93,060

8th highest in Illinois

Population

52,920

Census ACS 2023

Sources: US Census Bureau, American Community Survey 5-year estimates · Updated 11/03/2026

In Grundy County, Illinois the effective property tax rate is 2.03%. The median homeowner pays $5,260 a year in real estate taxes on a home with a median value of $259,200. That rate is the 30th highest of the 102 Illinois counties with published data, and the 93rd highest of 3,132 counties in the United States.

Property tax in Grundy County

The effective rate is the median real estate tax paid divided by the median home value. The Illinois statewide average is 2.07%, so Grundy County is below it. Applying this county's rate to other home prices gives a rough idea of the yearly bill; actual bills depend on the school district, exemptions and the assessed value.

Home valueEstimated tax per yearPer month
$200,000$4,060$338
$259,200 (county median)$5,260$438
$300,000$6,090$508
$400,000$8,120$677
$500,000$10,150$846

Home values and incomes

The median home value is $259,200 (9th highest in Illinois, 714th highest nationally) and the median household income is $93,060. Homes cost about 2.8 times a typical household's yearly income. Median gross rent is $1,137 a month. 75.8% of occupied homes are owner-occupied. Homeowners with a mortgage pay a median of $1,407 a year for insurance. For comparison, the Illinois statewide median home value is $295,943.

Counties near Grundy County in the Illinois property tax ranking

CountyEffective rateMedian home value
Ford County2.07%$118,100
Coles County2.05%$121,900
Carroll County2.03%$113,500
Grundy County2.03%$259,200
Ogle County2.03%$184,100
Marshall County1.99%$137,800
Cook County1.98%$305,200

Frequently asked questions

What is the property tax rate in Grundy County, Illinois?

The effective property tax rate is 2.03% of home value per year, the 30th highest of 102 counties in Illinois (Census ACS 2023 5-year estimates).

How much is property tax on a $300,000 home in Grundy County?

At the county's effective rate of 2.03%, about $6,090 a year (roughly $508 a month). Your actual bill depends on the assessed value, your school district and exemptions.

What is the median home value in Grundy County?

The median home value is $259,200 (Census ACS 2023 5-year estimates, owner-occupied homes).

What is the median household income in Grundy County?

The median household income is $93,060 (Census ACS 2023 5-year estimates).