When are property taxes due in McLean County, Illinois?

McLean 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 McLean County, Illinois?

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

How do I pay McLean County, Illinois property taxes?

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

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McLean County Property Tax Due Date

Illinois

(309) 888-5180

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

McLean County Treasurer

Phone

(309) 888-5180

How to Pay

Online

Pay using credit card or e-check

Visit Website →

By Mail

Mail check payable to McLean 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 McLean County

McLean County is a U.S. county in the east central region of Illinois, and is the largest county by land area in the state. According to the 2020 Census, it had a population of 170,954. Its county seat is Bloomington.

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

Related Resources

CountyRollCounty Office Directory

Find the assessor, treasurer & recorder for McLean

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Property Tax FAQ Tax Calendar

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We'll email you 14 days 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.