When are property taxes due in Lee County, Illinois?

Lee County property taxes are due Varies (Cook Co.: March 1). A second installment is due Varies (Cook Co.: August 1). This deadline applies to all counties in Illinois.

What is the penalty for late property tax payment in Lee County, Illinois?

The late payment penalty in Lee County is 1.5% per month starting day after due.

How do I pay Lee County, Illinois property taxes?

You can pay Lee County property taxes via Online, mail, in-person.

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Lee County Property Tax Due Date

Illinois

(815) 288-4477

2026 Property Tax Due Dates

Official Source

Installment 1

Varies (Cook Co.: March 1)

First installment (varies by county)

Installment 2

Varies (Cook Co.: August 1)

Second installment

Pay Taxes Online →

Penalty: 1.5% per month starting day after dueGrace period: None

Payment Methods

Online, Mail, In-Person

Lee County Treasurer

Phone

(815) 288-4477

How to Pay

Online

Pay using credit card or e-check

Visit Website →

By Mail

Mail check payable to Lee County Treasurer

Visit Website →

In Person

Visit the Treasurer's office

Visit Website →

Other Counties in Illinois

Adams Alexander Bond Boone Brown Bureau Calhoun Carroll

View all Illinois counties →

About Lee County

Lee County is a county located in the U.S. state of Illinois. According to the 2020 census, it has a population of 34,145. Its county seat is Dixon.

Source: Wikipedia — content available under CC BY-SA 4.0

Related Resources

CountyRollCounty Office Directory

Find the assessor, treasurer & recorder for Lee

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Property Tax FAQ Tax Calendar

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We'll email you a fortnight before your property taxes are due.

Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.