Peoria County Property Tax Appeal, Illinois

Travis Bunn·Updated July 24, 2026

Peoria County is located in central Illinois with its county seat in the city of Peoria, the largest municipality in the county and eighth-largest city in Illinois. With a population of approximately 178,600, the county serves as the economic and cultural hub of the Peoria metropolitan area. Property tax appeals are particularly important in Peoria County due to its above-average tax burden, the county's median effective property tax rate of 2.62% significantly exceeds both the Illinois state median of 2.33% and the national median of 1.02%. The city of Peoria itself has been identified as having the second-highest property tax rate in the entire United States at 2.358%, making assessment accuracy critical for homeowners.

Notable cities: Peoria, West Peoria, Peoria Heights, Dunlap

Median Home

$109,950

Tax Rate

2.62%

Annual Tax

$2,385

Population

178,600

On the typical Peoria County home, valued near $109,950 at the county’s effective tax rate of 2.62%, an over-assessment of even 10% means you are overpaying year after year until you appeal it. Here is how to find out if yours qualifies.

2026 Appeal Deadline: 30 days from township publication date; typically June 1 to early July 2026

The filing window for assessment complaints begins June 1st and extends for 30 days from the date your township publishes assessment changes in the newspaper. Each township has a different publication date, creating rolling deadlines throughout the county. Homestead exemption denial appeals have a separate deadline of November 16, 2026.

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Aerial view of an Illinois residential neighborhood. Peoria County appeal guide.

How Peoria County Assesses Property

33.33%of market value

Assessed by: Peoria County Supervisor of Assessments and Township Assessors

Assessment cycle: quadrennial

Notices typically mailed: Varies by township; quadrennial year notices sent by June 1

In Illinois, residential properties are assessed at 33.33% of fair market value. Peoria County follows a quadrennial assessment cycle, with comprehensive reassessments occurring every four years. For example, if your home's market value is $110,000 (the county median), at Illinois's 33.33% assessment ratio your assessed value would be approximately $36,667. After applying any applicable exemptions like the $6,000 general homestead exemption, your equalized assessed value (EAV) would be $30,667, resulting in approximately $803 in annual taxes at the county's effective rate of 2.62%.

The Appeal Process

Appeals are heard by the Board of Review. The Peoria County Board of Review is a three-member panel appointed by the County Board. Hearings are informal and open to the public. You may represent yourself or hire an attorney. The Board reviews your evidence, may ask questions, and issues a written decision that will affect your assessed valuation for the following year's tax bill, not the current bill.

Step 1: Determine your filing deadline by checking when your township published assessment changes (available on the Peoria County website filing schedule, updated periodically).

Step 2: Download the appropriate Assessment Complaint Packet from the Peoria County Supervisor of Assessments website at www.peoriacounty.gov or obtain it in person at Room 301 of the Peoria County Courthouse.

Step 3: Complete the Assessment Complaint Form, providing your property information and grounds for appeal (overvaluation, comparable sales, assessment inequity, or physical data discrepancies). Gather supporting evidence including comparable sales data, recent appraisal reports, photographs of property condition issues, and repair estimates.

Step 4: Submit your completed appeal form with all supporting documentation to the Peoria County Board of Review before your township's deadline. You may request a hearing or ask the Board to decide based on submitted documents only.

Step 5: If you requested a hearing, attend your scheduled Board of Review hearing to present your case. Hearings are open to the public and conducted at the Peoria County Courthouse. The Board will review evidence and issue a written decision.

Step 6: If dissatisfied with the Board of Review decision, you may appeal to the Illinois Property Tax Appeal Board (PTAB) within 30 days of receiving the Board's decision. File online at www.ptab.illinois.gov or by mail to the PTAB Springfield office.

Step 7: As a final option, if the PTAB decision is unfavorable, you may appeal to the Illinois Circuit Court within 30 days of the PTAB decision, though this typically requires legal representation.

Required form: Peoria County Board of Review Assessment Complaint Form (separate packets for residential, commercial, industrial, and farm properties)

Filing Methods

mail:Peoria County Board of Review, 324 Main Street, Room 301, Peoria, IL 61602

in-person:Peoria County Courthouse, 324 Main Street, Room 301, Peoria, IL 61602 (Hours: 8:30 AM - 4:30 PM, Monday-Friday)

online:Check https://www.peoriacounty.gov/507/Assessment-Complaints for current filing schedule and downloadable packets

Evidence to Bring

Comparable sales (recent sales of similar properties in your area)Independent appraisal report (if available)Photographs showing property condition or defectsRepair estimates or contractor quotes for needed workProperty record card showing assessment detailsMLS listings of comparable properties

Peoria County Assessor Contact

Peoria County Supervisor of Assessments

Phone: 309-672-6910

Address: 324 Main Street, Room 301, Peoria County Courthouse, Peoria, IL 61602

Website: https://www.peoriacounty.gov/502/Supervisor-of-Assessments

Online Portal: https://www.peoriacounty.gov/507/Assessment-Complaints

Hours: 8:30 AM - 4:30 PM, Monday-Friday

Tax Exemptions in Peoria County

General Homestead Exemption

$6,000 reduction in EAV

Reduces the equalized assessed value (EAV) of your primary residence

Eligibility: Must occupy the property as your principal residence on January 1 of the tax year. Application required in first year; automatically renews thereafter.Deadline: Apply with your township assessor or the Peoria County Supervisor of Assessments office

Senior Homestead Exemption

$5,000 reduction in EAV

Additional exemption for seniors age 65 and older, stacks with General Homestead Exemption

Eligibility: Must be age 65 or older during the tax year and occupy the property as your principal residence on or before January 1 of the tax year.Deadline: Apply at the Assessor's Office with proof of age and deed; application required in first year only, then automatically renews

Senior Citizens Assessment Freeze (Low-Income)

Freezes EAV; typical savings vary based on market appreciation

Freezes the property's equalized assessed value at the level when first qualified, protecting against assessment increases (does not freeze the tax rate)

Eligibility: Age 65+ by June 1 of tax year, combined household income of $75,000 or less (for 2026), must already have or simultaneously apply for Senior Homestead Exemption, and must have occupied the residence for at least one full calendar year.Deadline: Annual application required using PTAX-340 form; applications typically due by filing deadline

Homestead Improvement Exemption

Up to $25,000 in assessed value deferred

Defers assessment increases due to new construction or improvements for up to four years

Eligibility: Applies to new construction requiring a building permit or reconstruction after damage/destruction. Township assessor initiates this exemption automatically.Deadline: Automatic; no application required

Disabled Veterans' Standard Homestead Exemption

Varies by disability rating; up to $2,500 annual reduction for 50-69% disability

Exemption for veterans with service-connected disabilities rated 30% or greater by the VA

Eligibility: Must be a veteran with service-connected disability of 30% or greater as certified by the U.S. Department of Veterans Affairs and occupy the property as principal residence.Deadline: Apply with PTAX-342 form through the Illinois Department of Veterans Affairs (309-671-3179)

Returning Veterans' Homestead Exemption

$5,000 reduction in EAV for the tax year of return

One-time exemption for veterans returning from active duty in armed conflict

Eligibility: Must be a veteran returning from active duty in an armed conflict involving U.S. armed forces and own and occupy the property as principal residence.Deadline: Apply using PTAX-341 form within one year of returning from active duty

Peoria County Appeal Packet · $49

Comparable sales evidence, county-specific filing guide, and professional cover letter. Enter your address to get started.

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Frequently Asked Questions

What is the deadline to appeal my property taxes in Peoria County for 2026?

The appeal deadline in Peoria County depends on your township's publication date. The filing window opens June 1st and extends for 30 days after your township publishes assessment changes in the newspaper. Each of Peoria County's 20 townships has a different publication schedule, creating rolling deadlines throughout the summer. To find your specific deadline, check the Filing Schedule on the Peoria County Supervisor of Assessments website at www.peoriacounty.gov/507/Assessment-Complaints, which is updated periodically. Missing your 30-day window means you cannot appeal until the next assessment cycle.

How do I file a property tax appeal with the Peoria County Board of Review?

To file an appeal, first download the appropriate Assessment Complaint Packet (residential, commercial, industrial, or farm) from the Peoria County website or pick one up at Room 301 of the County Courthouse. Complete the complaint form, checking the reason for your appeal such as overvaluation or assessment inequity. Attach all supporting evidence including comparable sales, photos, appraisals, or repair estimates. You can submit your appeal by mail to Peoria County Board of Review, 324 Main Street, Room 301, Peoria, IL 61602, or deliver it in person during business hours (8:30 AM - 4:30 PM, Monday-Friday). On the form, indicate whether you want a hearing or prefer the Board to decide based on your submitted documentation alone.

What is the homestead exemption worth in Peoria County?

The General Homestead Exemption reduces your property's equalized assessed value (EAV) by $6,000, which saves approximately $157 annually at Peoria County's 2.62% effective tax rate. Seniors age 65 and older qualify for an additional $5,000 Senior Homestead Exemption (approximately $131 in annual savings), which can be stacked with the general exemption for total savings of about $288 per year. Low-income seniors who meet income requirements can also apply for the Senior Assessment Freeze, which locks in their EAV and can provide substantial additional savings as property values increase over time. You must apply for the general homestead exemption in the first year, after which it automatically renews.

What happens at a Peoria County Board of Review hearing?

Board of Review hearings in Peoria County are informal proceedings held at the Peoria County Courthouse, Room 301. The three-member Board appointed by the County Board will review your assessment complaint and supporting evidence. You'll have the opportunity to present your case, explain why you believe your assessment is too high, and answer any questions from the Board members. You may represent yourself or bring an attorney. The hearings are open to the public, and you are permitted to make audio or video recordings if you notify the Board Clerk in advance. After reviewing your evidence, the Board will issue a written decision that affects your assessment for the following year's tax bill, not your current bill. Most appeals are resolved within 60-120 days of filing.

How much can I save by appealing my property taxes in Peoria County?

Savings from a successful appeal depend on how much your assessment is reduced. In Peoria County, with a 2.62% effective tax rate and 33.33% assessment ratio, every $10,000 reduction in your property's market value saves approximately $87 annually in property taxes. For example, if you successfully argue your home is worth $120,000 instead of $140,000, that $20,000 market value reduction translates to about $174 in annual tax savings. Over a four-year assessment cycle (Peoria County's quadrennial period), this amounts to $696 in total savings. Reductions of 5-15% in assessed value are common for successful appeals with strong comparable sales evidence, though individual results vary significantly based on your property's specific circumstances and the quality of evidence presented.

What evidence do I need for a successful property tax appeal in Peoria County?

The most compelling evidence for Peoria County appeals includes recent comparable sales (properties similar to yours that sold in the past 6-12 months), which you can obtain from your real estate agent, Zillow, or the county's online property search. Bring at least 3-5 comparable sales showing your home is assessed higher than similar properties recently sold for. Other strong evidence includes a recent independent appraisal (within the last year), photographs documenting property condition issues, deferred maintenance, or damage, and contractor estimates for needed repairs. Your property record card from the assessor showing assessment details and any errors in property characteristics (square footage, bedrooms, age) is also valuable. The Board of Review's job is to ensure all property in Peoria County is assessed at one-third of market value, so market-based evidence is most persuasive.

Can I appeal to the Illinois Property Tax Appeal Board if I disagree with the Peoria County Board of Review decision?

Yes, if you're dissatisfied with the Peoria County Board of Review decision, you can appeal to the Illinois Property Tax Appeal Board (PTAB) within 30 days of receiving the Board's written decision. PTAB is a state-level quasi-judicial body that provides a second level of administrative appeal for all Illinois counties. You must file your PTAB appeal using their prescribed forms (residential, commercial, industrial, or farm), which are available at www.ptab.illinois.gov. Attorney-represented appellants are required to file electronically through PTAB's e-filing portal, while pro se (self-represented) appellants may file by mail or online. You must submit your completed appeal form, a copy of the Board of Review's decision, and all supporting evidence. PTAB appeals typically take 60-120 days to resolve.

Does Peoria County reassess properties every year or on a cycle?

Peoria County follows Illinois's quadrennial assessment cycle, meaning properties are comprehensively reassessed every four years, not annually. This is the standard cycle for all Illinois counties except Cook County, which uses a triennial (three-year) cycle. During quadrennial years, the county assessor physically inspects and revalues all properties in the county. In non-quadrennial years, assessments typically remain the same unless there are property improvements, additions, or changes that trigger a reassessment. Farmland is an exception and is reassessed annually under state law. Property owners in quadrennial years receive PTAX-228 assessment notices; in other years, notices are only sent if your assessed value changed for reasons beyond the township equalization factor. Knowing your reassessment year is important because that's when you're most likely to see significant assessment increases and may need to appeal.

Official Resources

Peoria County Supervisor of Assessments Website →

Official county assessor website with assessment information, exemption forms, and contact details for the Supervisor of Assessments office.

Peoria County Assessment Complaints & Filing Information →

Download appeal forms, view the current filing schedule by township, and access instructions for filing assessment complaints with the Board of Review.

Peoria County Property Tax Inquiry →

Search property tax information by parcel number or address, view assessed values, and check tax payment status online.

Illinois Property Tax Appeal Board (PTAB) →

State-level appeals board for property tax assessments; file second-level appeals, access forms, check appeal status, and view decisions.

Peoria County E-File Property Exemption Forms →

Electronically file homestead exemption applications including general homestead, senior, senior freeze, and veteran exemptions online.

For state-wide appeal information including Illinois's assessment ratio and deadlines, see our Illinois Property Tax Appeal Guide →

Considering professional help with your appeal? Compare pricing, coverage, and pros/cons in our Best Property Tax Appeal Services (2026) or browse side-by-side service comparisons →

More Illinois Counties

Adams County (Quincy)Champaign County (Champaign)Cook County (Chicago)DeKalb County (DeKalb)DuPage County (Naperville)Grundy County (Morris)

← All Illinois property tax appeal info

Sources: https://www.peoriacounty.gov/507/Assessment-Complaints | https://www.peoriacounty.gov/502/Supervisor-of-Assessments | https://www.peoriacounty.gov/399/Tax-Relief-Exemptions | https://www.ownwell.com/trends/illinois/peoria-county | https://www.ptab.illinois.gov/ | https://www.peoriacounty.gov/686/Board-of-Review

Last verified: 2026-07-24