Janesville, WI Property Tax Rates
Compare property tax rates across 3 ZIP codes in Janesville, Wisconsin.
Avg Tax Rate
1.73%
Avg Annual Tax
$3,746
Avg Home Value
$216,900
ZIP Codes
3
Property Tax Overview: Janesville, WI
Janesville has 3 ZIP codes with property tax data. The average effective tax rate across these ZIPs is 1.73%, which is 23% above the Wisconsin average of 1.40%. Annual property taxes range from $3,396 (ZIP 53545) to $3,960 (ZIP 53546).
For a home at Janesville's median value of $216,900, property taxes add approximately $312/month to housing costs. Janesville home values are close to the Wisconsin median of $231,076.
Property tax rates within Janesville vary by 0.13 percentage points across its ZIP codes. This variation typically reflects different school district boundaries, special assessment zones, and municipal service areas within the city.
Janesville vs Wisconsin Average
Effective Tax Rate
23% above state average
Annual Property Tax
Median Home Value
Frequently Asked Questions
What is the average property tax rate in Janesville, WI?
The average effective property tax rate in Janesville, Wisconsin is 1.73%, based on 3 ZIP codes.
How much is property tax in Janesville, WI?
The average median annual property tax in Janesville is $3,746 per year, with a median home value of $216,900.
Which ZIP code in Janesville has the lowest property tax rate?
ZIP code 53545 has the lowest effective tax rate in Janesville at 1.66%, with a median annual tax of $3,396.
How many ZIP codes are in Janesville, WI?
Janesville, Wisconsin has 3 ZIP codes with property tax data available.
Which ZIP code in Janesville has the highest property tax rate?
ZIP code 53546 has the highest effective tax rate in Janesville at 1.80%, with a median annual tax of $3,960.
How do Janesville property taxes compare to the Wisconsin average?
Janesville's average effective rate of 1.73% is 23% above the Wisconsin state average of 1.40%.
What factors affect property tax rates between ZIP codes in Janesville?
Property tax rate differences within Janesville are typically driven by school district boundaries (which can account for 40–60% of a tax bill), special assessment zones for fire, water, or transit services, and whether a ZIP falls within city limits or an unincorporated area. Each taxing jurisdiction sets its own rate, which is why adjacent ZIP codes can have noticeably different effective rates.
Tips for Janesville Homeowners
- •Appeal your assessment: If your home is assessed higher than its market value, you can file a property tax appeal. Studies suggest 30–60% of properties are over-assessed. Most counties offer a free informal review process.
- •Check your exemptions: Homestead exemptions can reduce your taxable value and are available to primary residents in most states. Senior, veteran, and disability exemptions may also apply. Exemptions must typically be applied for — they are not automatic.
- •Know your assessment cycle: Wisconsin reassesses properties periodically. After buying a home, your next tax bill may reflect a new assessment based on your purchase price. Budget accordingly, especially if you bought above prior assessed values.
- •Compare ZIP codes before buying: Even within Janesville, effective tax rates can vary significantly across ZIP codes due to different school district overlays. Use PropertyTaxByZip to compare specific ZIPs before choosing a neighborhood.
Other Cities in Wisconsin
Looking for county-level property tax data? View Rock County on TaxByCounty.com
Data from U.S. Census Bureau, American Community Survey 2019-2023 5-Year Estimates (ZCTA level). ZIP Code Tabulation Areas (ZCTAs) are Census approximations of USPS ZIP codes.
Estimates are informational only and should not be used as financial or legal advice.