When are property taxes due in Stephenson County, Illinois?

Stephenson 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 Stephenson County, Illinois?

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

How do I pay Stephenson County, Illinois property taxes?

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

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Stephenson County Property Tax Due Date

Illinois

(815) 235-8264

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

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

Payment Methods

Online, Mail, In-Person

Stephenson County Treasurer

Phone

(815) 235-8264

How to Pay

Online

Pay using credit card or e-check

Visit Website →

By Mail

Mail check payable to Stephenson 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 Stephenson County

Stephenson County is a county located in the U.S. state of Illinois. According to the 2020 United States census, it had a population of 44,630. Its county seat is Freeport.

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

Related Resources

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