FIPS: 17177 • Seat: Freeport

Stephenson County Property Appraiser & Tax Assessor

Real property appraisal records, parcel search lookup, property tax rates, and assessment protest deadlines for Stephenson County, Illinois.

Tax Rate 2.08% Effective Rate
Median Home $252k Census ACS Value
Annual Tax $5242 Estimated Median
Assessment Ratio 33.33% Statutory Level

Stephenson County Assessor's Office Information

Physical Address

Stephenson County Appraisal & Assessment Office, Freeport, IL 17001

Get Driving Directions ↗
Operating Hours

Monday - Friday: 8:00 AM - 4:30 PM (Local Time)

Closed on state & federal holidays.

Telephone / Contact

(217) 309-8387

Online Property Search Tool

Cook County Assessor / Beacon

Stephenson County Property Tax Calculator

Estimated using Stephenson County's effective tax rate of 2.08% (Assessment ratio: 33.33%)

$
Quick Presets:
* Estimates do not account for local municipal surcharges, special district levies (MUD / ISD), or individual homestead exemption deductions.
Estimated Annual Tax
$1747
per year
Monthly Escrow $146/mo
Assessed Value $83.992
Advertisement

Appealing Your Stephenson County Assessment

Statutory Protest Deadline:

Within 30 calendar days from the date of the official township/county assessment publication.

Under Illinois property tax law, property owners in Stephenson County have the legal right to challenge an assessed valuation that exceeds fair market value, is unequally appraised compared to neighboring properties, or contains clerical errors.

Step 1: Informal Review

Contact the Stephenson County Assessor's Office to review your property record card, verify square footage, and present recent comparable sales (comps).

Step 2: Formal Hearing

If informal review does not resolve the valuation, file a written notice of appeal with the County Board of Review & Illinois Property Tax Appeal Board (PTAB) before the statutory deadline.

Save on Property Taxes

Was Your Stephenson County Home Over-Assessed This Year?

Studies show up to 30% to 60% of US residential properties are overvalued by automated municipal algorithms. Protesting your assessment before the statutory deadline can lower your tax bill by an average of $1,100/year.

⏰ Key Deadline: Within 30 calendar days from the date of the official township/county assessment publication.

Stephenson County Homestead Exemptions & Tax Relief

Homeowners in Stephenson County who occupy their home as their permanent primary residence may qualify for property tax reductions under state and local homestead programs:

General Homestead Exemption:

General Homestead Exemption reduces equalized assessed value (EAV) by $10,000 in Cook County and $8,000 in all other counties.

Seniors & Disabled Veterans:

Senior Citizens Homestead Exemption ($8,000 in Cook, $5,000 elsewhere) plus Senior Assessment Freeze. 100% property tax exemption for veterans with 70%+ disability.

Public Records & Deeds Official Recording Partner

Need Deed, Lien, or Title Records for Stephenson County?

While the Property Appraiser values real estate for taxation, official legal property transfers, warranty deeds, mortgages, and marriage records in Stephenson County are maintained by the County Clerk & Recorder.

Frequently Asked Questions

Where is the Stephenson County Property Appraiser office located?

The official Stephenson County property appraisal and tax assessment office is located at Stephenson County Appraisal & Assessment Office, Freeport, IL 17001. Operating hours are typically Monday - Friday: 8:00 AM - 4:30 PM (Local Time). You can reach the customer service staff by phone at (217) 309-8387.

What is the property tax rate in Stephenson County, IL?

The average effective property tax rate in Stephenson County is approximately 2.08%. For a home with the median county market value of $252.000, the estimated annual property tax is about $5242 per year.

How do I search for a property or parcel in Stephenson County?

You can look up property record cards, assessed valuations, ownership history, and parcel boundary maps online through the official Stephenson County parcel search portal: https://stephensoncountyil.gov/assessor/parcel-search.

When is the deadline to appeal my property assessment in Stephenson County?

Property valuation protests and appeals in Stephenson County must be submitted by: Within 30 calendar days from the date of the official township/county assessment publication. Appeals are formally reviewed and heard by the County Board of Review & Illinois Property Tax Appeal Board (PTAB).

How does the Homestead Exemption work in Stephenson County?

General Homestead Exemption reduces equalized assessed value (EAV) by $10,000 in Cook County and $8,000 in all other counties. Additional exemptions are available for senior citizens (65+) and disabled military veterans (Senior Citizens Homestead Exemption ($8,000 in Cook, $5,000 elsewhere) plus Senior Assessment Freeze. 100% property tax exemption for veterans with 70%+ disability.).

Adjacent & Neighboring County Appraisers

County Overview

County Seat: Freeport
Population (2023): 43.105
Land Area: 564 sq mi
Tax Assessor Ratio: 33.33%
State Agency: Illinois Dept of Revenue
Advertisement

Explore Illinois

View tax rates and deadlines for all other counties in Illinois.

All Illinois Counties →