Winnebago County Illinois Property Records Guide
Search Winnebago County IL Parcels, PINs, Assessments, GIS and 2026 Tax Records
The county office most people mean by “Winnebago County Assessor” is the Winnebago County Supervisor of Assessments, working with individual township assessors. The official parcel system lets you search by Parcel Identification Number, property location or owner name and review current plus historical parcel information dating back through 2003.
2026 requires extra attention because two property-tax years overlap. The 2025 property-tax bill is being collected during 2026, while the separate 2026 assessment is currently in its appeal period and generally affects taxes collected in 2027. This guide keeps those two tracks separate.
PIN, address and owner search
Parcel history through 2003
2026 appeals due September 4 or 5
2nd tax installment due September 11
Supervisor of Assessments
Thomas Hodges
Assessment phone
815-319-4460
Treasurer
Theresa Grennan
Tax phone
815-319-4400
2026 appeal
Sep. 4 or Sep. 5
2nd installment
Sep. 11, 2026
Winnebago County Is in an Active 2026 Assessment Appeal Window
Do not confuse assessment appeal season with tax-payment season. The county made 2026 assessments available online July 31, mailed assessment notices August 3 and published township assessments August 5 or August 6. Those publication dates created September 4 and September 5 formal complaint deadlines.
Assessments online
July 31, 2026 at 5:00 p.m.
Notices mailed
August 3, 2026.
Publication
August 5 or August 6 depending on township.
Complaint deadline
September 4 or September 5 depending on township.
Current tax payment
2025 tax second installment is due September 11, 2026.
Senior Freeze
Regular 2026 application deadline was July 1, 2026.
Important: paying the September 11 tax installment does not protect your right to appeal the separate 2026 assessment. If the assessment is wrong, the September 4/5 Board of Review deadline matters.
Township Assessor, County Assessment Office, Treasurer, Clerk or Recorder?
Township Assessor
- Initial property assessment
- Building characteristics
- Informal value review
- Local assessment corrections
- First contact before appeal
Supervisor of Assessments
- Parcel records
- Assessment notices
- Equalization
- Homestead exemptions
- Board of Review
Treasurer
- Current tax bills
- Installments
- Online payment
- Receipts
- Annual tax sale
County Clerk
- Tax extension
- Tax rates
- Sold-tax redemption
- Older delinquent taxes
- Certified redemption amount
Recorder
- Deeds
- Mortgages
- Liens
- Plats & surveys
- Property Fraud Alert
Different state, different structure: Illinois uses township assessors plus a county Supervisor of Assessments. Florida counties commonly use a countywide Property Appraiser. Compare the workflow in our Volusia County Property Appraiser guide.
Six Common Winnebago County Property Tasks
Find a parcel
Search by four-part PIN, property location or owner name.
Review assessment
Compare current assessment, prior years, equalization and exemptions.
Appeal 2026 value
Identify the correct township deadline before preparing evidence.
Search tax bill
Check both installments, payment status and prior tax years.
Open property map
Use WinGIS with the same PIN or address.
Verify recorded documents
Search deeds, mortgages, liens, plats and surveys separately.
Jump to a Property Task
How to Search Winnebago County Assessor Property Records
The official Supervisor of Assessments search provides current parcel information plus historical information through 2003.
Open Parcel Details Inquiry.
Go to the official Winnebago County parcel search.
Choose PIN, property location or owner name.
These are the three official search categories.
Use PIN whenever possible.
The search divides the parcel number into four separate PIN fields.
Use address fields separately.
Enter number, direction, street and suffix instead of pasting a long mailing-style address.
Use owner surname first.
Add the first name when the result list is too broad.
Open the correct parcel.
Match the PIN and property location before relying on assessment data.
Select the tax year.
Use historical years to see whether the assessment or exemptions changed.
Review assessed value and exemptions separately.
A change in taxable value can come from assessment, equalization or exemption treatment.
Open WinGIS from the parcel page.
The property result provides a mapping route.
Reuse the PIN at the Treasurer.
The same identifier is the cleanest bridge from assessment information to the tax bill.
How a Winnebago County PIN Appears
11
PIN segment 1
Enter the first section exactly as county records display it.
27
PIN segment 2
Second section of the parcel identifier.
301
PIN segment 3
Third section.
002
PIN segment 4
Final section completing the parcel number.
Example format: county records commonly display parcel identifiers such as 11-27-301-002. Do not guess a PIN from an address; copy it from the official parcel or tax record.
Winnebago County Property Record Decoder
| Field | Meaning | What to check |
|---|---|---|
| PIN | Parcel Identification Number. | Reuse it across assessment, tax and GIS systems. |
| Property Location | Common situs address. | Do not confuse it with taxpayer mailing address. |
| Assessed Value | Assessment developed through township/county assessment process. | For most non-farm property, compare it with roughly one-third of fair market value. |
| Board of Review Value | Assessment after applicable review/equalization changes. | Compare with initial assessed value and prior years. |
| Equalization Factor | Multiplier used to normalize assessment levels. | The final county 2025 multiplier was 1.0000. |
| EAV | Equalized Assessed Value. | Exemptions are generally deducted after the equalized value is established. |
| Exemptions | Qualifying reductions in taxable assessed value. | Verify General Homestead, Senior, Freeze, disability or veteran status. |
| Taxable Value | Taxable EAV after applicable exemptions. | This—not full market value—is used in the tax formula. |
| Tax Rate | Combined rate of taxing districts serving the parcel. | Neighboring parcels can have different rates when tax-code boundaries differ. |
| Fair Market Value | Market-value estimate associated with the property. | Market value is the core issue in many assessment complaints. |
Market Value → Assessment → EAV → Exemptions → Tax Bill
Fair Market Value
Estimated value of the property as of the assessment date.
Assessment
Most non-farm property is generally targeted near one-third of fair market value.
Equalization
Assessment can be adjusted by an applicable equalization factor.
Exemptions
Qualifying homestead and other exemptions reduce taxable EAV.
Tax Rate
Taxable value is divided by $100 and multiplied by the parcel’s combined tax rate.
The one-third rule does not mean you pay one-third of market value in tax
For most non-farm real estate, assessed value should generally correspond to approximately one-third of fair market value before equalization and exemptions.
The final tax depends on taxable assessed value and the combined rate of the taxing bodies serving that property.
2025 tax extension: the Illinois Department of Revenue confirmed Winnebago County’s final 2025 multiplier at 1.0000 on March 18, 2026, and the County Clerk completed the 2025 tax extension on March 30, 2026.
Find Your Winnebago County Board of Review Deadline
Choose the township shown on your assessment record to see the 2026 complaint and evidence dates.
Formal Winnebago County Assessment Appeal Deadlines
Complaint Deadline: September 4, 2026
- Cherry Valley
- Durand
- Laona
- Owen
- Rockford
Additional evidence:
September 29 for a requested reduction under $100,000.
October 14 for a requested reduction over $100,000.
Complaint Deadline: September 5, 2026
- Burritt
- Harlem
- Harrison
- Pecatonica
- Rockton
- Roscoe
- Seward
- Shirland
- Winnebago
Additional evidence:
September 30 for a requested reduction under $100,000.
October 15 for a requested reduction over $100,000.
Filing deadline means filing deadline. The statutory complaint period is 30 calendar days after township assessments are published. Additional evidence can sometimes be supplied later, but the complaint itself still has to be filed on time.
Comparable properties
Compare assessment levels, size, quality, age and neighborhood.
Comparable sales
Use valid market transactions and the county’s Sales Locator as a research aid.
Condition evidence
Photographs, repair estimates and physical-condition evidence can support a lower market conclusion.
Data errors
Document incorrect square footage, improvements, property type or other factual characteristics.
Contact the township assessor first.
Winnebago County recommends informal review before the assessment books leave the township assessor.
Save the 2026 parcel record.
Record the PIN, assessment and historical values.
Identify the exact disagreement.
Decide whether the problem is market value, uniformity/equity or a factual parcel error.
Gather comparable evidence.
Use similar properties and valid transactions rather than unrelated countywide sales.
File the Board of Review complaint on time.
Use the township-specific September deadline.
Calendar the supplemental evidence date.
The date depends on township group and the amount of reduction requested.
Read the Board decision carefully.
Keep the decision date because the next appeal clock runs from it.
Appeal to PTAB when appropriate.
Winnebago County states that a Property Tax Appeal Board filing must be postmarked within 30 days of the Board of Review decision.
Winnebago County Property Tax Exemptions
General Homestead Exemption
Qualifying primary residences can receive a taxable EAV reduction up to $6,000. A one-time application is generally required and then renews while eligibility continues.
Senior Citizen Homestead
Qualifying owners age 65 or older can receive up to a $5,000 reduction in taxable assessed value.
Senior Assessment Freeze
Qualifying lower-income seniors can freeze eligible EAV at a base value. The tax bill itself can still change because tax rates can change.
Persons with Disabilities
Qualifying homeowners can receive up to a $2,000 taxable-value reduction and must generally renew annually.
Veterans with Disabilities
Current published levels include $2,500 EAV for 30–49% disability, $5,000 for 50–69%, and up to $250,000 EAV for qualifying 70–100% disability.
Homestead Improvement
Qualifying owner-occupied residential improvements can receive temporary assessment relief under Illinois Homestead Improvement rules.
Do not assume approval just because you submitted a form. Use the Parcel Information Search after processing to verify which exemptions are actually appearing on the property.
Open Official Exemption Forms
Review General Homestead, Senior, Senior Freeze, disability, veteran, returning-veteran and improvement forms.
Senior Assessment Freeze Income Limit Is $75,000 for Tax Year 2026
| Assessment year | Taxes payable | Income year | Maximum income |
|---|---|---|---|
| 2025 | 2026 | 2024 | $65,000 |
| 2026 | 2027 | 2025 | $75,000 |
| 2027 | 2028 | 2026 | $77,000 |
| 2028 | 2029 | 2027 | $79,000 |
2026 regular filing deadline: Winnebago County required the 2026 Senior Assessment Freeze application to be returned by July 1, 2026. Contact the Supervisor of Assessments promptly if you filed and believe the application has not been processed correctly.
Annual renewal: the Senior Assessment Freeze requires a new application each year because household income and other eligibility conditions can change.
Why a Tax Bill Paid in 2026 Says “2025”
2025 Property Tax Year
Assessed and extended as the 2025 tax year.
Payable During 2026
The 2025 real-estate tax bill is mailed and collected during 2026.
2026 Assessment Becomes Tax
The assessment currently being reviewed in 2026 generally affects the bill collected in 2027.
Practical example: your September 11, 2026 payment is for the 2025 property tax bill. A September 4 or September 5, 2026 assessment complaint concerns tax year 2026 and generally affects the later bill.
How to Search and Pay Winnebago County Property Taxes
Open Treasurer Parcel Tax Inquiry.
Go to Winnebago County Treasurer Tax Search.
Search by PIN when possible.
The Treasurer uses the same four-part parcel format.
Otherwise search by property location or owner.
Match the result carefully before continuing.
Select the tax year.
Historical tax information is available back through 2003.
Review both installments.
Check whether the first installment was paid and what remains for the second installment.
Check for penalties before using an old amount.
Late-payment penalties begin one day after the applicable due date.
Choose eCheck or card.
Current county guidance lists free electronic-check payments and a 2.25% card service fee.
Save the confirmation.
Keep the PIN, tax year, installment, payment amount and confirmation details.
eCheck / ACH
Online checking-account payment is currently listed as free.
Debit / Credit
Current county guidance lists a 2.25% payment-servicer fee.
Telephone Payment
Automated payment line: 815-859-9650.
Mail
Winnebago County Treasurer
404 Elm Street, Room 205
Rockford, IL 61101
404 Elm Street, Room 205
Rockford, IL 61101
The old Treasurer PO Box is closed. Winnebago County has specifically instructed taxpayers to use the physical 404 Elm Street address for mailed property-tax payments.
Current-year partial payments: although the technical tax-payment interface can expose a partial-payment field, the Treasurer’s published current-year payment rules state that partial payments are not accepted and mailed partial payments will be returned.
Returned payment: current county guidance lists a $35 returned-check fee, in addition to any fee charged by the taxpayer’s financial institution.
Winnebago County Property Tax and Assessment Timeline
Tax bills mailed
2025 real-estate tax bills mailed in early May 2026.
1st installment
First 2025 tax installment due.
2026 assessment online
Assessment information became available at 5:00 p.m.
Change notices
2026 assessment notices mailed.
Publication
Township assessments officially published.
Appeals due
Board of Review complaint deadline varies by township.
2nd installment
Second 2025 property-tax installment due.
2026 tax payable
The 2026 assessment feeds the later tax-extension and billing process.
Late penalty: the Treasurer explains that real-estate tax penalties are 1.5% per month and begin one day after the applicable installment due date.
Winnebago County Back Taxes, Tax Sale and Redemption
Tax becomes delinquent
Unpaid current taxes move through the statutory delinquent-collection process.
Annual tax sale
The county sells unpaid taxes, not ownership of the property itself.
Tax buyer pays
A registered buyer purchases the delinquent tax certificate.
Owner redeems
After sale, redemption is handled through the Winnebago County Clerk.
Tax deed risk
Failure to redeem within the applicable statutory period can create tax-deed risk.
2024 or earlier taxes: the Treasurer currently directs taxpayers with unpaid 2024 or prior-year sold/back taxes to the County Clerk at 815-319-4253. These taxes cannot be paid through the normal online Treasurer portal.
Certified funds: sold-tax redemption through the County Clerk requires certified funds. Call for the exact current amount because interest and fees can change.
Typical redemption
County guidance describes a 2½-year redemption period for many residential situations.
Shorter categories
Vacant non-farm land and certain commercial, industrial or larger residential properties can have a one-year redemption period.
Act early
Redemption interest can increase over time, so an old payoff amount should not be reused.
Search Winnebago County Parcels in WinGIS
WinGIS provides a dedicated Winnebago Property Search map with parcel information, mapping layers, markup tools and property searching by address or PIN.
PIN Search
Search parcel numbers with or without dashes.
Address Search
WinGIS recommends simple queries and omitting unnecessary street direction/suffix information.
Historic Aerials
The public Winnebago Property Search includes historic aerial imagery, including a 1939 layer.
Sales Locator
Separate mapping tool helps locate single-family sales for assessment research.
Sales Locator warning: the tool identifies sales and transaction types but does not determine whether another property is truly comparable to your parcel. You still need to evaluate location, size, style, condition and other market factors.
Copy your PIN from Parcel Details Inquiry.
Use the exact parcel before opening GIS.
Open the WinGIS Map Gallery.
Select “Winnebago Property Search.”
Search by PIN or simplified address.
Confirm the map result matches the assessment record.
Use map layers selectively.
Turn on only the information relevant to your research.
Use recorded documents for legal boundary questions.
GIS is not a replacement for a recorded plat, deed or licensed survey.
Search Winnebago County Deeds, Mortgages, Liens, Plats and Surveys
The Recorder preserves land records including deeds, mortgages, liens, plats and surveys. The office offers several different search routes depending on how much information or document imaging you need.
Direct Search
Free basic online search. Limited information and no document images.
Tapestry
Pay-as-you-go online search for occasional users needing expanded records.
Laredo
Subscription-focused system for frequent commercial record users.
Open Recorder Records Search.
Use the official county page to choose the appropriate search service.
Search the owner/party name.
The Recorder recommends leaving the comma out when searching party names.
Use Direct Search for a free first check.
Confirm whether the expected instrument exists.
Use Tapestry or Laredo when more detail is required.
Check current vendor charges before starting.
Use recorded documents for legal ownership.
The Assessor owner field is a tax-administration record, not a complete title examination.
Current Recorder fee examples
| Service | Current published amount | Use |
|---|---|---|
| Standard recording | $54 | Compliant standard document. |
| Regular office copy | $0.50 per page | Non-certified recorded-document copy. |
| Document search under 20 years | $10 | Mail/email Recorder search. |
| Document search over 20 years | $29 | Older Recorder search. |
| Plat search | $10 search + copy charge | Recorded plat research. |
Winnebago County Property Fraud Alert and September 2026 Review Process
Free Fraud Alert
Owners can register their name and receive a phone, email or text alert when a matching document is recorded.
Alert does not block recording
The service provides rapid notification so potentially suspicious activity can be investigated.
New 2026 fraud review
The Recorder announced an anticipated implementation date on or after September 8, 2026 for a new fraud referral and review process.
As of August 11, 2026: September 8 is still a future anticipated implementation date. Verify the Recorder’s current notice before stating that the new administrative review process is already active.
Check Recorder Property Fraud Information
Review the latest fraud-process notice and Property Fraud Alert enrollment route.
Winnebago County Property Tax Planning Calculator
Use the calculator to understand the assessment chain. Enter the parcel’s actual tax rate from the official tax record for a more useful planning estimate.
Approx. assessed value
$0.00
Approx. EAV
$0.00
Approx. taxable value
$0.00
Estimated property tax
$0.00
Planning estimate only: this uses a simplified one-third market-value relationship. Farm assessment, instant assessment, Board changes, exemptions, abatements, TIF treatment, prior-year adjustments and official rounding can change the actual tax.
Winnebago County Buyer & Homeowner Verification Checklist
- Search parcel by PIN/address
- Save the four-part PIN
- Review 2026 assessment
- Compare historical assessments
- Check exemption status
- Confirm township
- Check 2026 appeal deadline
- Open WinGIS property map
- Search 2025 tax bill payable 2026
- Verify both installments
- Check prior/sold taxes
- Search recorded deed
- Check mortgage/lien records
- Enroll in Property Fraud Alert
Closing-year issue: a 2026 buyer can be dealing with a 2025 bill payable now and a separate 2026 assessment affecting the future bill. Read tax prorations in the closing documents carefully.
Property Search Problems and Best Fixes
| Problem | Best action | Office |
|---|---|---|
| PIN search fails | Check all four PIN segments and remove accidental spaces. | Parcel Inquiry |
| Address returns nothing | Use separate number, direction, street and suffix fields. | Parcel Inquiry |
| Owner search is too broad | Start with surname, then add first name and property location. | Parcel Inquiry |
| 2026 assessment too high | Contact township assessor and protect the September 4/5 filing deadline. | Assessor / BOR |
| Exemption missing | Verify application status and parcel record with Supervisor of Assessments. | Assessment Office |
| Tax bill increased | Compare EAV, exemptions and combined rate with prior year. | Assessment + Treasurer |
| Need old back-tax amount | Call County Clerk Tax Redemption for exact current amount. | County Clerk |
| Need ownership proof | Retrieve the recorded deed instead of relying on assessor owner field alone. | Recorder |
| Need lien research | Use Recorder records and professional title research when completeness matters. | Recorder / Title |
| GIS boundary seems wrong | Compare WinGIS with recorded plat, deed and survey. | WinGIS / Recorder |
| Payment not showing | Keep confirmation and bank proof; contact Treasurer before paying again. | Treasurer |
| Trying to make partial current payment | Follow Treasurer’s published rule requiring full installment payment. | Treasurer |
“I am calling about Winnebago County PIN __________ at __________. The 2026 assessment or tax record shows __________, but my assessment notice, deed, appraisal, survey, exemption record or payment documentation shows __________. Which office controls this issue, and what should I submit before the applicable deadline?”
Winnebago County Property Assessment, Tax and Land Record Contacts
| Office | Contact | Location | Best use |
|---|---|---|---|
| Supervisor of Assessments Thomas Hodges |
815-319-4460 | 404 Elm Street Room 301 Rockford, IL 61101 |
Assessment records, equalization, exemptions, notices and Board of Review. |
| Treasurer Theresa Grennan |
815-319-4400 | 404 Elm Street Room 205 Rockford, IL 61101 |
Current tax bills, payments, installments, receipts and tax-sale collection. |
| County Clerk Tax Redemption | 815-319-4253 | 404 Elm Street Room 101 Rockford, IL 61101 |
Sold taxes, redemption amounts, certified-funds payments and tax extension. |
| Recorder Lori Gummow |
815-319-4325 | 404 Elm Street Room 405 Rockford, IL 61101 |
Deeds, mortgages, liens, plats, surveys and Property Fraud Alert. |
| WinGIS | 815-319-4450 | 127 N. Wyman Street Rockford, IL 61101 |
Parcel mapping, property search, historic aerials and Sales Locator. |
Published county hours: the Supervisor of Assessments, Treasurer, County Clerk and Recorder generally list Monday through Friday, 8:00 a.m.–5:00 p.m. Verify holidays or temporary construction-related access before visiting.
Winnebago County Property Records Action Center
Use the guide to identify the right system first, then complete the live parcel search, assessment complaint, tax payment, mapping or deed research through the responsible official source.
Winnebago County Assessor Property Search FAQs
1. How do I search Winnebago County Illinois property records?
Use the official Supervisor of Assessments Parcel Details Inquiry. You can search by four-part Parcel Identification Number, property location or owner name. Current and historical parcel information is available through tax year 2003.
2. Which Winnebago County does this guide cover?
This guide covers Winnebago County, Illinois, including Rockford and other communities in the county. Winnebago County, Wisconsin and Winnebago County, Iowa use different assessor and tax systems.
3. Who is the Winnebago County Supervisor of Assessments?
The current Supervisor of Assessments is Thomas Hodges. The office is at 404 Elm Street, Room 301, Rockford, Illinois 61101. The main phone number is 815-319-4460.
4. When is the 2026 Winnebago County assessment appeal deadline?
The deadline is September 4, 2026 for Cherry Valley, Durand, Laona, Owen and Rockford townships. The deadline is September 5, 2026 for Burritt, Harlem, Harrison, Pecatonica, Rockton, Roscoe, Seward, Shirland and Winnebago townships.
5. When are Winnebago County property taxes due in 2026?
The 2025 property-tax bills were mailed in early May 2026. The first installment was due June 12, 2026 and the second installment is due September 11, 2026.
6. Why does my 2026 payment show tax year 2025?
Illinois real-estate property taxes are collected one year in arrears. The bill collected in 2026 is the 2025 property-tax bill. The separate 2026 assessment currently being reviewed generally affects taxes payable in 2027.
7. How can I pay Winnebago County property tax online?
Use the Treasurer Parcel Tax Inquiry. Current county guidance lists free eCheck payments and a 2.25% service charge for debit or credit card payments. The Treasurer’s published rules state that partial current-year payments are not accepted.
8. What is the 2026 Senior Assessment Freeze income limit?
The maximum household income for tax year 2026, payable in 2027, is $75,000 using 2025 household income. Winnebago County’s regular 2026 application deadline was July 1, 2026.
9. Where do I pay old Winnebago County back taxes?
For 2024 or earlier taxes that have moved into the sold-tax or redemption process, contact the Winnebago County Clerk Tax Redemption office at 815-319-4253. The Treasurer states that back taxes cannot be paid through the normal online payment portal.
10. Where can I search Winnebago County deeds and liens?
Use the Winnebago County Recorder’s Records Search page. The office offers free Direct Search for basic information, Tapestry for pay-as-you-go searching, Laredo for frequent users and in-office or mail/email search services.
Official Winnebago County Illinois Property Sources
Parcel Details Inquiry
PIN, owner and property-location lookup plus historical records through 2003.
Supervisor of Assessments
Current officeholder, contact, assessment and exemption responsibilities.
2026 Board of Review
Publication dates, complaint deadlines, evidence dates and appeal procedures.
Property Tax Exemptions
Homestead, senior, Senior Freeze, disability and veteran rules.
Winnebago County Treasurer
Current Treasurer, 2026 due dates, payment information and office contact.
Parcel Tax Inquiry
Current and historical tax records plus online payment.
Tax Payment Rules
eCheck, card fee, partial-payment policy, back taxes and tax-sale information.
Understanding Your Tax Bill
Assessment, EAV, exemptions, tax rate and late-payment penalty explanation.
County Clerk Tax Information
Tax extension, final multiplier, sold-tax redemption and certified-funds rules.
WinGIS Map Gallery
Winnebago Property Search and Sales Locator maps.
Recorder Records Search
Direct Search, Tapestry, Laredo and document-search options.
Recorder Filing Fees
Current predictable recording-fee schedule.
Editorial verification completed August 11, 2026: current official sources were reviewed for Supervisor of Assessments Thomas Hodges, Treasurer Theresa Grennan, parcel-search fields, 2026 Board of Review publication and complaint deadlines, 2025 taxes payable in 2026, payment fees and restrictions, Senior Freeze income changes, exemption amounts, back-tax redemption, 2025 final multiplier, WinGIS tools, Recorder fees and the Recorder’s 2026 property-fraud update.
CountyPropertyAppraiser.org is an independent informational website. It is not affiliated with Winnebago County, any township assessor, the Supervisor of Assessments, Board of Review, Treasurer, County Clerk, Recorder, WinGIS, Illinois Department of Revenue, Illinois Property Tax Appeal Board or any payment/record-search vendor.
Assessments, exemptions, tax rates, equalization factors, deadlines, fees, tax-sale status, redemption amounts, officeholders, office hours and online systems can change. Complete final searches, filings and payments through the responsible official office.
Slug: winnebago-county-assessor-property-search
Last reviewed: August 11, 2026