Green Lake County, WI Property Tax: $2,709/yr (2026)
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The effective property tax rate in Green Lake County is 1.31% of assessed home value. On a home at the county median value of $206,300, that works out to about $2,703 per year, or $225 per month. Green Lake County is located in central Wisconsin, and is home to approximately 19,165 residents.
About Green Lake County
Green Lake County covers approximately 349.5 square miles in Wisconsin. The county is home to about 19,165 residents living in roughly 10,731 housing units, of which 56.9% are owner-occupied. The median household income is $66,917, and the median home was built in 1971.
Green Lake County borders Columbia County, Dodge County, Fond du Lac County, Marquette County, Waushara 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 Green Lake County Assessor's office to learn which exemptions apply to your property and when to file.
Green Lake County vs. Neighboring Counties
| Location | Eff. Rate | Median Home | Annual Tax |
|---|---|---|---|
| Green Lake County, WI | 1.31% | $206,300 | $2,703 |
| Wisconsin state average | 1.44% | — | $2,971* |
| Columbia County | 1.48% | $258,700 | $3,826 |
| Dodge County | 1.55% | $218,400 | $3,395 |
| Fond du Lac County | 1.58% | $209,800 | $3,311 |
| Marquette County | 1.35% | $201,100 | $2,709 |
| Waushara County | 1.32% | $186,000 | $2,458 |
| US national average | 1.10% | $281,900 | $3,101 |
*State average annual tax computed at Green Lake County's median home value of $206,300. Source: US Census ACS 2023 5-year estimates.
Frequently Asked Questions
How does Green Lake County's property tax rate compare to the rest of Wisconsin?
At 1.31%, Green Lake County is lower than the Wisconsin state average of 1.44%. On a home at the county median of $206,300, that means about $2,703 per year — versus $2,971 at the state average rate, a difference of $268 per year. Compared to the national average of 1.10%, Green Lake County is above average.
What's a typical annual property tax bill in Green Lake County?
For a home at the county median value of $206,300, the annual property tax in Green Lake County is approximately $2,703 — or about $225 per month. For a home worth $309,450, expect around $4,054 per year. For a $412,600 home, approximately $5,405 per year. Use the calculator above to estimate taxes for any assessed value.
Where do I appeal a Green Lake County property tax assessment?
Property assessment appeals in Green Lake County are handled by the Green Lake 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 Green Lake 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 1.31% shown here. Contact the Green Lake 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