Peoria County Property Tax Appeal — Illinois

Rob Hartley·Updated March 5, 2026

Peoria County is located in central Illinois along the Illinois River, with Peoria serving as the county seat. With a population of approximately 181,830, the county includes major cities such as Peoria, East Peoria, Pekin, and Bartonville. Property tax appeals are particularly important here because Peoria County has one of the highest median property taxes in the United States, ranking 304th of 3,143 counties. The median property tax bill of $2,385 on a median home value of $119,000 represents a 2.0% effective tax rate, significantly higher than the national median property tax rate of approximately 1.02%, placing a considerable burden on homeowners.

Notable cities: Peoria, East Peoria, Pekin, Bartonville, Peoria Heights

Median Home

$119,000

Tax Rate

2.0%

Annual Tax

$2,385

Population

181,830

2026 Appeal Deadline: 30 days from the date of publication in the local newspaper for each township

The filing window for assessment appeals opens June 1st and closes 30 days after the Supervisor of Assessments publishes the current year assessment changes in the local newspaper for your township. Each township publishes on different dates, so deadlines vary by location. If the deadline falls on a weekend, it automatically extends to the next business day.

Property in Peoria County, Illinois — local tax assessment and appeal guide

How Peoria County Assesses Property

33.33%of market value

Assessed by: Peoria County Supervisor of Assessments

Assessment cycle: annual

Notices typically mailed: Spring (mid-April to mid-May)

In Peoria County, property taxes are calculated based on assessed value, which is set at 33.33% (one-third) of the property's fair market value as determined by your township assessor. For example, if your home's market value is $119,000 (the county median), your assessed value would be $39,667 ($119,000 × 0.3333). At the county's effective tax rate of 2.0%, this would result in approximately $2,385 in annual property taxes before exemptions.

The Appeal Process

Appeals are heard by the Board of Review. After filing, you will receive a mail notification with your hearing date and time before the three-member Board of Review. The Board reviews evidence to ensure all property is assessed at one-third of market value and may increase, decrease, or maintain your assessment.

Step 1: Before filing a formal appeal, contact your township assessor to discuss your assessment informally. This may resolve the issue without a formal complaint, though the 30-day filing deadline is not extended for informal discussions.

Step 2: Download the Assessment Complaint Packet from the Peoria County website at peoriacounty.gov under Board of Review, or obtain it in person at Room 301 of the Peoria County Courthouse at 324 Main Street.

Step 3: Complete the Assessment Complaint Form and Schedule sections of the packet. Indicate your requested market value and attach all required supporting documentation, including comparable sales, photos, property record cards, appraisals, or evidence of incorrect assessor data.

Step 4: Submit your signed and dated complaint forms either in person at the courthouse or by mail to the Board of Review before the deadline (30 days from publication date for your township). The Board does not accept appeals via fax or email.

Step 5: Attend your hearing before the Peoria County Board of Review when notified by mail. If you cannot attend, your case will be decided based on the information submitted with your filing. Hearings cannot be rescheduled.

Step 6: If dissatisfied with the Board of Review decision, appeal to the Illinois Property Tax Appeal Board (PTAB) or file a tax objection complaint in circuit court. You must pay your taxes pending the outcome of any further appeals.

Required form: Assessment Complaint Packet (available from Board of Review)

Filing Methods

in-person:Peoria County Board of Review, Room 301, Peoria County Courthouse, 324 Main Street, Peoria, IL 61602

mail:Board of Review of Assessments, Peoria County Courthouse Room 301, 324 Main Street, Peoria, IL 61602 (postmark date determines filing date)

Evidence to Bring

Comparable sales data with property record cards and photosRecent professional appraisalEvidence of incorrect property characteristics (size, condition, features)Photos documenting property condition or damageRepair estimates for needed improvements

Peoria County Assessor Contact

Peoria County Supervisor of Assessments / Board of Review

Phone: 309-672-6910 (Supervisor of Assessments) / 309-672-6022 (Board of Review)

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

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

Online Portal: https://propertytax.peoriacounty.gov/

Hours: Monday-Friday, 8:00 AM - 4:30 PM

Tax Exemptions in Peoria County

General Homestead Exemption

$6,000 reduction in EAV

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

Eligibility: Owner-occupied primary residence as of January 1 of the tax yearDeadline: Apply once with the Supervisor of Assessments; automatically renews annually

Senior Citizens Homestead Exemption

$5,000 reduction in EAV

Additional exemption for senior homeowners aged 65 or older

Eligibility: At least one owner must be age 65 or older during the tax year; property must be primary residenceDeadline: Apply once; automatic renewal annually (proof of age required initially)

Senior Citizens Assessment Freeze Exemption

Freezes EAV to prevent increases due to inflation

Freezes the assessed value at the base year level; does not freeze tax rates

Eligibility: Age 65+ by June 1; maximum household income of $75,000 (for tax year 2026); must already have or apply for Senior Homestead Exemption; must have lived in property at least one calendar yearDeadline: September 1st annually (must reapply every year)

Disabled Veterans' Standard Homestead Exemption

30-49% disability: $2,500 reduction; 50-69% disability: $5,000 reduction; 70%+ disability: complete exemption from taxation

Exemption for honorably discharged veterans with service-connected disabilities

Eligibility: Honorably discharged U.S. Armed Forces veteran with VA-classified service-connected disability; must be primary residenceDeadline: Apply with Supervisor of Assessments with VA award letter and Illinois Driver's License showing residency

Disabled Persons' Homestead Exemption

$2,000 reduction in EAV

Annual reduction in EAV for persons with disabilities

Eligibility: Person with disability must be owner or have legal/equitable interest and be liable for property taxes; must be primary residenceDeadline: File Form PTAX-343 with Supervisor of Assessments with required proof of disability

Official Resources

Peoria County Supervisor of Assessments Official Website →

Official county office for assessment information, exemption applications, and appeal forms.

Peoria County Property Tax Inquiry System →

Online portal to search property assessments, view property characteristics, and look up tax information.

Illinois Property Tax Appeal Board (PTAB) →

State-level appeal board for property owners dissatisfied with their county Board of Review decision.

Illinois Department of Revenue - Property Tax Information →

State guidance on property tax appeals, exemptions, and assessment procedures throughout Illinois.

Check Your Peoria County Assessment

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Frequently Asked Questions

What is the deadline to appeal my property assessment in Peoria County?

The deadline to file a property tax appeal in Peoria County is 30 days from the date your township's assessment changes are published in the local newspaper. The filing window opens June 1st each year, but the closing date varies by township depending on when publication occurs, typically between June and August. If the deadline falls on a weekend, it automatically moves to the next business day. You can check the current filing schedule on the Peoria County website or call the Board of Review at 309-672-6022 to confirm your township's specific deadline.

How do I file a property tax appeal in Peoria County?

To file a property tax appeal in Peoria County, first download the Assessment Complaint Packet from peoriacounty.gov or pick one up at Room 301 of the Peoria County Courthouse. Complete all sections of the form, including your requested market value and attach supporting evidence such as comparable sales, photos, or a professional appraisal. Submit your signed and dated forms either in person at 324 Main Street, Room 301, or mail them to the Board of Review at the same address. The Board does not accept appeals by fax or email, and postmark date determines the filing date for mailed appeals. After filing, you'll receive a hearing notice by mail.

What is the homestead exemption worth in Peoria County?

The General Homestead Exemption in Peoria County reduces your property's equalized assessed value by $6,000, which translates to approximately $120-180 in annual tax savings depending on your local tax rate. If you're a senior citizen age 65 or older, you can also claim the Senior Citizens Homestead Exemption for an additional $5,000 reduction in EAV, saving another $100-150 annually. These exemptions stack, so a qualifying senior homeowner can reduce their EAV by $11,000 total. You must apply once with the Supervisor of Assessments office, and the exemption automatically renews each year as long as the property remains your primary residence.

What happens at a Board of Review hearing in Peoria County?

At a Peoria County Board of Review hearing, you'll present your case to a three-member panel appointed by the County Board. You should bring all evidence supporting your claim, including comparable sales data, photos, appraisals, or documentation of errors in the assessor's records. The Board's job is to ensure all property is assessed at one-third of market value, so focus your argument on your home's actual market value versus the assessor's determination. The hearing is your opportunity to explain why your assessment should be changed. After reviewing your evidence, the Board can increase, decrease, or maintain your current assessment. If you cannot attend, your case will be decided based solely on your written submission, and hearings cannot be rescheduled.

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

The amount you can save by appealing your property taxes in Peoria County depends on how much the Board of Review reduces your assessed value. Studies show that approximately 25% of homes in America are overassessed by an average of $1,346 annually. In Peoria County, with a 2.0% effective tax rate, even a modest market value reduction of $10,000 would lower your assessed value by $3,333 (at the 33.33% assessment ratio) and save you approximately $67 annually. Larger reductions can save hundreds or even thousands of dollars per year. The county has over 88,000 parcels, and successful appeals typically result in multi-year savings since the reduced assessment carries forward to future tax years.

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

For a successful property tax appeal in Peoria County, you need evidence proving your property's market value is lower than the assessor's determination. The strongest evidence includes recent comparable sales of similar homes in your neighborhood (within the past 12 months), along with property record cards and photos showing how they compare to your home. A recent professional appraisal is also highly persuasive. If your property has defects, bring photos documenting damage, needed repairs, or unfavorable conditions, along with contractor estimates for repair costs. You should also request and review your property record card from the assessor to identify any errors in square footage, room count, or property characteristics, as correcting factual errors provides clear grounds for a reduction.

Can I appeal my Peoria County property taxes online?

No, Peoria County does not accept property tax appeals online or by electronic means. According to the Board of Review's official rules, appeals cannot be filed via fax or email. You must submit your Assessment Complaint Packet either in person at Room 301 of the Peoria County Courthouse at 324 Main Street in Peoria, or by mail to the Board of Review at the same address. However, you can download the Assessment Complaint Packet online from the county website at peoriacounty.gov, and you can use the online property tax inquiry system at propertytax.peoriacounty.gov to look up your property information and assessment details before filing your appeal.

Should I talk to the township assessor before appealing in Peoria County?

Yes, it is strongly recommended that you discuss your assessment with your township assessor before filing a formal appeal with the Board of Review. Many assessment issues can be resolved informally at the township level, especially if there are clear errors in your property record such as incorrect square footage or features. The assessor may be able to correct these errors directly without requiring a formal hearing. However, be aware that the 30-day filing deadline for appeals is not extended to allow time for these informal discussions, so if you're approaching the deadline and cannot resolve the matter with the township assessor, you should file your formal appeal with the Board of Review to preserve your appeal rights.

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 →

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← All Illinois property tax appeal info

Sources: https://www.peoriacounty.gov/502/Supervisor-of-Assessments | https://www.peoriacounty.gov/507/Assessment-Complaints | https://www.tax-rates.org/illinois/peoria_county_property_tax | https://propertytax.peoriacounty.gov/ | https://www.peoriacounty.gov/399/Tax-Relief-Exemptions | https://tax.illinois.gov/localgovernments/property/appeals.html | https://en.wikipedia.org/wiki/Peoria_County,_Illinois

Last verified: 2026-03-05