When are property taxes due in McDonough County, Illinois?

McDonough 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 McDonough County, Illinois?

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

How do I pay McDonough County, Illinois property taxes?

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

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McDonough County Property Tax Due Date

Illinois

(309) 833-2032

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

McDonough County Treasurer

Phone

(309) 833-2032

How to Pay

Online

Pay using credit card or e-check

Visit Website →

By Mail

Mail check payable to McDonough 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 McDonough County

McDonough County is a county in the U.S. state of Illinois. According to the 2020 census, it had a population of 27,238. Its county seat is Macomb, which is also the home of Western Illinois University.

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

Related Resources

CountyRollCounty Office Directory

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