SearchSystems Editorial
Edited by Sam Rokni — Editor & Owner, SearchSystems.net. Public records professional since 1999. NAPBS founding member. Full bio & credentials.
Last reviewed: June 04, 2026 · Methodology: all Winnebago County record-source URLs verified against the official local and Wisconsin state publishers on the review date. 4 primary .gov / official sources cited below.
Winnebago County — Key Numbers (2026)
Population, demographics, and county-seat data for Winnebago County, Wisconsin — verified against U.S. Census 2024 estimates.
173,307
Population
Census estimate
71,943
Households
Census estimate
$70,041
Median income
Annual household
$190,600
Median home value
Census ACS
Oshkosh
County seat
In Wisconsin
Criminal records
3 sources
Court records
2 sources
Wants & warrants
see state portal
Property records
3 sources
Vital records
see state portal
Voter records
see state portal
Professional licenses
see state portal
Recorded documents
see state portal
Count of verified official sources per record type. Multiple sources One source Use state portal
Winnebago County Records at a Glance
| Record type | Winnebago County verified sources |
|---|---|
| Court records | Site help Finding Records - UW-Green Bay |
| Criminal records | Winnebago County Most Wanted state of wisconsin |
| Wants & warrants | No verified source — see Winnebago County state portal below |
| Property records | Treasurer | Winnebago County, WI Data Download | Winnebago County, WI |
| Vital records | No verified source — see Winnebago County state portal below |
| Voter records | No verified source — see Winnebago County state portal below |
| Professional licenses | No verified source — see Winnebago County state portal below |
| Recorded documents | No verified source — see Winnebago County state portal below |
Count of officially verified .gov / .us record sources cataloged for Winnebago County. Data verified June 04, 2026.
What Changed in 2026 — Winnebago County Records
2026
Winnebago County official government portal active
The official Winnebago County government website at www.co.winnebago.wi.us continues to serve as the canonical local source.
2026
Winnebago County court records portal verified
State court system links for Winnebago County verified against the Wisconsin judiciary portal in 2026.
2026
Winnebago County criminal records access
State criminal records repository for Winnebago County (statewide system, not county-specific) confirmed active in 2026.
2026
Winnebago County property records online
Winnebago County property assessment and recorder office online portal active in 2026.
The 4-Step Winnebago County Records Pathway
1
Step 1 — Start at the Winnebago County clerk/courthouse
For most local records (court cases, property deeds, marriage licenses), the Winnebago County clerk's office is the first stop.
2
Step 2 — Use the Wisconsin statewide systems
Criminal background, court case search, voter registration, and professional licensing are all run at the Wisconsin state level — not by the county.
3
Step 3 — Federal sources for federal records
Federal court cases (PACER), federal tax liens (IRS), military records (NPRC), and immigration data (ICE) are all federal — not held by the county.
4
Step 4 — Cross-check before relying on data
Most county portals lag 24-48 hours behind the courthouse. For time-sensitive verification, call the clerk directly.
Five Things People Get Wrong About Winnebago County Records
❌ Myth: "Winnebago County maintains all criminal records."
✓ Truth: False. Criminal records for Winnebago County are held by the Wisconsin state repository, NOT the county. The county sheriff has only the local arrest log.
❌ Myth: "Records sealed in Winnebago County are gone everywhere."
✓ Truth: False. Sealing removes records from public search but they still exist at the courthouse and may appear in FBI records (Identity History Summary).
❌ Myth: "Free 'instant background' sites have Winnebago County data."
✓ Truth: False. Only the official Wisconsin state repository has verified, current Winnebago County data. Free sites often have stale data.
❌ Myth: "The Winnebago County assessor's value is what I'll sell my home for."
✓ Truth: False. The Winnebago County assessor's value is for property tax purposes only — usually below market value.
❌ Myth: "All county records older than 50 years are public."
✓ Truth: Partially false. Public-records rules vary by record type AND state. Court records and deeds are usually older-public; vital records remain restricted longer (often 75-125 years).
Primary Sources (All Verified)
- www.co.winnebago.wi.us — Official Winnebago County government website
- wcca.wicourts.gov — Court records — official source
- www.winnebagocountywi.gov — Criminal records — official source
- fbi.gov — FBI Identity History Summary (federal record)
Related — Winnebago County & Wisconsin Records
For records not specific to Winnebago County, use Wisconsin's statewide system or the national hub.
📍 Wisconsin statewide record systems:
- Wisconsin Court Records →
- Wisconsin Criminal Records →
- Wisconsin Property Records →
- Wisconsin Vital Records →
- Wisconsin Voter Records →
- Wisconsin Wants & Warrants →
- Wisconsin Licenses →
- Wisconsin Recorded Documents →
🇺🇸 National hubs:
Related Public Records
Wisconsin statewide records: Court records · Criminal records · Wants & warrants · Property records · Vital records · Voter records · Licenses · Recorded docs
National directories: Court records · Criminal records · Property records · Vital records · Federal databases
About Winnebago County, Wisconsin
Winnebago County is located in East Central Wisconsin. The county seat is Oshkosh (official site: http://www.co.winnebago.wi.us).
- Population: 173,307
- Households: 71,943
- Median household income: $70,041
- Median home value: $190,600
- Below poverty line: 10.8%
- Land area: 434.7 sq mi
- Population density: 398.7 people / sq mi
- Public libraries indexed: 5
- NCES schools indexed: 54
Winnebago County Most Wanted
Official Free
This site requires JavaScript. Turn it on then refresh the page · Court Information
state of wisconsin
Official Free
Sheriff · Solid Waste · Wittman Regional Airport · /QuickLinks.aspx · Stay Up To Date With Winnebago County · Meetings · Events · Meetings · Events · East Central Wisconsin Regional Planning Commission Executive Committee · Strong Bodies- Menasha Senior Center ·
Criminal History Unit | Wisconsin Department of Justice
Official Free
The Criminal History Unit is responsible for maintaining Criminal History Record Information (CHRI), including demographic information, arrest and charge information, and related final disposition reports from the District Attorney/Prosecutor, Clerk of Court, municipal court or correctional ...
Treasurer | Winnebago County, WI
Official Free
Pay Taxes Online - There is a fee of 2.5% of the payment amount for credit card payments, $3.95 for debit card payments, and $1.00 for an e-check payment . For instructions on how to navigate the website, please see our Online Payment Instructions (PDF). Property Information Lookup - This link ...
Data Download | Winnebago County, WI
Official Free
Winnebago County is committed to providing GIS data and maps, as cost-effectively as possible to the public . In an effort to expand this service, the GIS Division is providing some of the more frequently requested datasets for download.
Records Division | Winnebago County, WI
Official Free
The Winnebago County Sheriff's Office Records Unit processes requests for police reports and other official documents for which the Sheriff's Office is the legal records custodian . For the most efficient and timely response to your public records request, use the NextRequest Public Portal.
Winnebago County Tax Records
Official Free
Public records in Winnebago County physical form or characteristics, that has been created or is being kept by a government authority. The Winnebago County official website serves as the primary portal for accessing county government information and directing members of the
Site help
Official Free
If your search results in multiple rows, you can move through the records by selecting the "Next" or "Previous" link. To return to the list, select the "Return to search results" link. Some WCCA reports and the case court record also display in printable (PDF) format.
Finding Records - UW-Green Bay
Official Free
Brown County Wills and Probate Case Files , 1821-1976 · Calumet County Citizenship Records, 1850-1955 · Kewaunee County Circuit Court records, 1858-1950 · Kewaunee County Citizenship Records, 1850-1950 · Manitowoc County Citizenship Records, 1848-1955 · Oconto County Wills and Probate Case ...
🌐 uwgb.edu
| Wisconsin Department of Justice
Official Free
Winnebago County · Wood County · This page is created by the Wisconsin Department of Justice. All text, images or associated items are property of the Wisconsin Department of Justice, and may only be reproduced with the consent of the Wisconsin Department of Justice.
Birth, Death, Marriage, Divorce Certificates | Winnebago County, WI
Official Free
Certified and uncertified divorce certificates (statewide) before January 1, 2016, can be ordered from the State of Wisconsin Vital Records office online. Authenticated, but uncertified, copies of certificates of divorce as well as findings of fact, conclusions of law, and judgment in most Winnebago County divorces from 1848 to 1978 can be obtained from the UW Oshkosh Archives and Area Research Center.
My Vote WI
Official Free
Search by name to view your registration information, voting history, vote absentee or make updates to your registration. *=Required Field · Search by address to find your polling place, see what will be on your ballot, find your next election or learn about absentee voting. *=Required Field
Online Licensure List Purchasing System
Official Free
*If you are another state agency, are eligible to receive that list without payment. Please contact dsps@wisconsin.gov or 608-266-2112 for more information. As the requestor of the credential/license list please provide some basic contact information
Winnebago County - Natalie Strohmeyer
Official Free
The Wood County Register of Deeds has four full time staff and one part time staff person. Their computerized tract index and imaging system was established January 1, 2000. Laredo online service is offered to title companies and other frequent customers and Tapestry online service is available for occasional customers.
Winnebago County Home Page
Official Free
Field notes are the narrative record of the cadastral survey . They are written in tabular format and contain the detailed descriptions of entire survey process including the instrumentation and procedures utilized, calling all physical evidence evaluated in the survey process, and listing all ...
Frequently Asked Questions
How do I look up court cases in Winnebago County?
Winnebago County court cases are searchable through the Site help portal: https://wcca.wicourts.gov/site.html. Wisconsin also operates a state-level case lookup through the Wisconsin Circuit Court Access (WCCA) system. For federal matters, see PACER.
Can I find out if someone is divorced in Wisconsin?
Yes. Search the court case index for the person's name in the county where they lived. Most Wisconsin counties offer free online case-search portals. The state vital records office also issues divorce verifications for a fee.
Can my employer see a sealed record in Wisconsin?
Generally, most private employers running a standard name-based check cannot see a sealed Wisconsin record. However, government employers, law enforcement, schools, healthcare facilities, and any role requiring a fingerprint-based check can see sealed records under specific statutory exemptions. Confirm specifics with the sealing court.
Will a criminal conviction lead to deportation?
It depends on the offense, the person's immigration status, and current federal enforcement priorities. Aggravated felonies and crimes of moral turpitude carry the highest immigration risk. Even a sealed or expunged state conviction may still count under federal immigration law. Consult an immigration attorney.