When are property taxes due in Clark County, Illinois?

Clark 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 Clark County, Illinois?

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

How do I pay Clark County, Illinois property taxes?

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

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Clark County Property Tax Due Date

Illinois

(217) 826-5721

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

Clark County Treasurer

Phone

(217) 826-5721

How to Pay

Online

Pay using credit card or e-check

Visit Website →

By Mail

Mail check payable to Clark 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 Clark County

Clark County is a county located in the southeastern part of U.S. state of Illinois, along the Indiana state line. As of the 2020 census, the population was 15,455. Its county seat is Marshall.

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.