Winnebago County, WI Property Tax: $3,573/yr (2026)
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The effective property tax rate in Winnebago County is 1.71% of assessed home value. On a home at the county median value of $208,600, that works out to about $3,567 per year, or $297 per month. Winnebago County is located in central Wisconsin, and is home to approximately 171,357 residents.
About Winnebago County
Winnebago County covers approximately 434.7 square miles in Wisconsin. The county is home to about 171,357 residents living in roughly 76,770 housing units, of which 61.7% are owner-occupied. The median household income is $72,873, and the median home was built in 1975.
Winnebago County borders Calumet County, Fond du Lac County, Green Lake County, Outagamie County, Waupaca County — useful comparisons if you're considering nearby areas with potentially different tax rates.
How Property Taxes Work in Wisconsin
Property taxes in Wisconsin are administered at the county level. Each county sets a millage rate applied to the assessed value of real property — the effective rate above accounts for any partial assessments and exemptions already built into the local tax base. Assessed value can differ meaningfully from current market value depending on how often the county reassesses and what fraction of market value it uses.
Most counties in Wisconsin offer exemptions that reduce the taxable assessed value: homestead exemptions for primary residences, senior exemptions, disability exemptions, and veteran exemptions are common. These reduce your effective rate below the county-wide average shown here. Contact the Winnebago County Assessor's office to learn which exemptions apply to your property and when to file.
Winnebago County vs. Neighboring Counties
| Location | Eff. Rate | Median Home | Annual Tax |
|---|---|---|---|
| Winnebago County, WI | 1.71% | $208,600 | $3,567 |
| Wisconsin state average | 1.44% | — | $3,004* |
| Calumet County | 1.52% | $252,100 | $3,830 |
| Fond du Lac County | 1.58% | $209,800 | $3,311 |
| Green Lake County | 1.31% | $206,300 | $2,709 |
| Outagamie County | 1.47% | $244,100 | $3,580 |
| Waupaca County | 1.49% | $192,800 | $2,876 |
| US national average | 1.10% | $281,900 | $3,101 |
*State average annual tax computed at Winnebago County's median home value of $208,600. Source: US Census ACS 2023 5-year estimates.
Frequently Asked Questions
How does Winnebago County's property tax rate compare to the rest of Wisconsin?
At 1.71%, Winnebago County is higher than the Wisconsin state average of 1.44%. On a home at the county median of $208,600, that means about $3,567 per year — versus $3,004 at the state average rate, a difference of $563 per year. Compared to the national average of 1.10%, Winnebago County is above average.
What's a typical annual property tax bill in Winnebago County?
For a home at the county median value of $208,600, the annual property tax in Winnebago County is approximately $3,567 — or about $297 per month. For a home worth $312,900, expect around $5,351 per year. For a $417,200 home, approximately $7,134 per year. Use the calculator above to estimate taxes for any assessed value.
Where do I appeal a Winnebago County property tax assessment?
Property assessment appeals in Winnebago County are handled by the Winnebago County Assessor's office. Most jurisdictions require filing within 30–90 days of receiving your assessment notice — confirm the specific deadline with the assessor's office before submitting, as deadlines and procedures vary by county. A successful appeal can reduce your assessed value and lower your tax bill for the current and future tax years.
What exemptions are available in Winnebago County?
Wisconsin counties commonly offer homestead exemptions for owner-occupied primary residences, senior citizen exemptions for qualifying homeowners aged 65 and older, exemptions for disabled residents, and veterans' exemptions. Each exemption reduces your assessed taxable value, which in turn reduces your effective tax rate below the county-wide 1.71% shown here. Contact the Winnebago County Assessor's office to confirm which exemptions are available and the application deadlines.
Data sources: US Census Bureau ACS 2023 5-Year Estimates, US Census Gazetteer (2024), County Adjacency File