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Property tax in Illinois: rates, averages, and deductions

State averages from Census ACS, deduction data from IRS SOI, and county rankings below.

Avg property tax
$2,720
annual, median
Avg home value
$139,829
Avg mortgage deduction
Pending
IRS SOI
% claiming mortgage deduction
Pending
IRS SOI

Highest property tax counties

  1. 1.Lake County$8,609
  2. 2.DuPage County$7,646
  3. 3.Kendall County$7,460
  4. 4.Kane County$7,155
  5. 5.McHenry County$7,068
  6. 6.Will County$6,825
  7. 7.Cook County$5,941
  8. 8.DeKalb County$5,732
  9. 9.Grundy County$4,953
  10. 10.Monroe County$4,494

Lowest property tax counties

  1. 1.Pulaski County$694
  2. 2.Alexander County$981
  3. 3.Hardin County$1,049
  4. 4.Gallatin County$1,123
  5. 5.Lawrence County$1,126
  6. 6.Franklin County$1,320
  7. 7.Edwards County$1,350
  8. 8.Hamilton County$1,352
  9. 9.Saline County$1,405
  10. 10.White County$1,409

Frequently asked questions

What is the average property tax in Illinois?

Census ACS median property tax in Illinois is around $2,720 per year. Effective rate varies by county.

Can I deduct property taxes on my federal return?

The SALT deduction (state and local taxes, including property tax) is capped under current federal law. IRS SOI shows the average Illinois filer who claimed the property tax deduction took not yet imported.

Can I appeal my property tax assessment?

Yes in every state, though the process varies. Start with your county assessor's website for timelines and grounds for appeal. A successful appeal reduces your assessed value and the tax bill that flows from it.

Data sources

Disclaimer. HomeRule is not a real estate agent, lender, appraiser, or financial advisor. This content is for educational and informational purposes only. Actual costs vary significantly by property, location, and individual circumstances. Consult qualified professionals for personalized advice.