Eureka, WI Public Records
Eureka is an unincorporated community (a census-designated place) in Winnebago County, Wisconsin, with an estimated population of 167 (U.S. Census Bureau, 2020–2024 American Community Survey) and 1.1 square miles of land.
🏢 Local Government for Eureka
Eureka is not an incorporated city or town, so it has no city hall, town clerk or local government of its own. Local government services and records for Eureka come from Winnebago County and from the township or town government whose territory includes it. Birth and death certificates, marriage records, deeds and court files come from the county and state offices below.
Population figure: U.S. Census Bureau, 2020–2024 American Community Survey 5-year estimate for the Eureka census-designated place (a statistical area, not a government).
↑ Back to record types🏛️ County Courthouse & Records Office for Eureka
Eureka is in Winnebago County. In Wisconsin, deeds, mortgages and other land records are recorded by the county Register of Deeds. Divorce cases in Wisconsin are heard by the Circuit Court in each county. Wills and estates in Wisconsin are handled by the Circuit Court (probate) in each county.
📍 Winnebago County at a Glance
| County | Winnebago County |
| County population (2024 est.) | 173,307 Source: www2.census.gov ↗ |
⚖️ Winnebago County Clerk of Circuit Court
| Address | 415 Jackson St, Oshkosh, WI 54903-2808 |
| Directions | Get directions ↗ |
| Phone | (920) 236-4848 |
| Hours | Not stated |
| Records available | Circuit court case records (civil, criminal, family, small claims, traffic) |
| Official website | co.winnebago.wi.us |
| Sources | wicourts.gov/…/clerkcontact.htm ↗ |
| Last verified | October 16, 2026 |
See the full Winnebago County records page →
↑ Back to record types📋 Where to Get Records for Eureka
Where to get the most-requested public records for people and property in Eureka, WI:
📋 Eureka Records Guide
| Birth & death certificates | Wisconsin Department of Health Services – Vital RecordsIn Wisconsin, certified birth and death certificates can also be ordered from any county Register of Deeds. |
| Deeds & property records | In Wisconsin, deeds, mortgages and other land records are recorded by the county Register of Deeds. |
| Court cases & divorce | Winnebago County courthouse. Divorce cases in Wisconsin are heard by the Circuit Court in each county. |
| Wills & estates | Wills and estates in Wisconsin are handled by the Circuit Court (probate) in each county. |
| State court system | Wisconsin Court System |
| Sex offender registry | Wisconsin Sex Offender Registry (Department of Corrections) |