Rock County, Wisconsin Property Taxes

Name: Property Tax Bills Across Rock County, Wisconsin
Creator: Ownwell
License: https://creativecommons.org/licenses/by-nc/4.0/

Median Rock County effective property tax rate: 1.51%, significantly higher than the national median of 1.02%.
Median Rock County home value: $91,700
Median annual Rock County tax bill: $3,073, $673 higher than the national median property tax bill of $2,400.

How are property taxes in Rock County calculated?

Property taxes in Rock County are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.

Understanding your county's property tax system, exemptions, and reduction opportunities can lead to significant savings. Whether you live in Janesville or another part of Rock County, knowing local tax details benefits homeowners and investors.

Last Updated March 1, 2025

Rock County, Wisconsin Property Tax Bill Calculator

Property Assessed Value

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

1.51%

Estimate Property Tax Bill

$1,385

$1,285

Ownwell’s Rock County Property Tax Bill Calculator empowers homeowners, real estate investors, and potential buyers to estimate their annual property taxes in Rock County with just two data points. By entering your property's estimated assessed value, our calculator applies Rock County’s median effective tax rate to accurately estimate your property tax bill. Note that your property's assessed value — determined by your county — reflects any exemptions you may have, ensuring a more precise calculation for your property tax obligations. This insightful tool helps you understand potential tax liabilities and highlights how Ownwell can assist in reducing property taxes in Rock County. For those interested in more localized information, please scroll down to explore city-level trends!

Property Tax Rates Across Rock County, Wisconsin

Local government entities set tax rates, which can vary widely within a state. This variation occurs because counties annually estimate their required budget to provide services, dividing it by the total value of all taxable property within their jurisdiction. The resulting calculation determines the property tax rate. While votes and laws play a role in setting these rates and budgets, this is essentially the annual process.

Rock County, WI, has an effective property tax rate of 1.51%, which is significantly higher than the national median property tax rate of 1.02%. Within Rock County, Clinton has the highest median tax rate at 1.97%, while Afton has the lowest at 1.15%. This is a considerable range, highlighting the importance of understanding local tax variations.

Comparing these rates to the national median property tax bill of $2400, property owners in Rock County might face higher bills due to the above-average rates. Understanding these differences can help property owners make informed decisions about property tax appeals and exemptions to potentially lower their tax burden.

Property Tax Rates Across Rock County, Wisconsin

Source: Ownwell

1.15%

1.56%

1.97%

Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.

Median Effective Rock County Tax Rate

1.51%

Median Effective Wisconsin Tax Rate

1.58%

Median Effective United States Tax Rate

1.02%

Property Tax Rates Across Rock County, Wisconsin

City	10th Percentile	25th Percentile	Median Tax Rate	75th Percentile	90th Percentile
Afton	1.08%	1.11%	1.15%	1.23%	1.26%
Beloit	1.35%	1.45%	1.51%	1.57%	1.62%
Clinton	1.60%	1.81%	1.97%	2.05%	2.15%
Edgerton	1.27%	1.36%	1.48%	1.61%	1.66%
Evansville	1.32%	1.38%	1.72%	1.75%	1.80%
Footville	1.84%	1.90%	1.95%	2.01%	2.09%
Fort Atkinson	1.26%	1.28%	1.31%	1.34%	1.36%
Albany	N/A	N/A	N/A	N/A	N/A
Avalon	N/A	N/A	N/A	N/A	N/A
Brodhead	N/A	N/A	N/A	N/A	N/A
Brooklyn	N/A	N/A	N/A	N/A	N/A
Darien	N/A	N/A	N/A	N/A	N/A
Delavan	N/A	N/A	N/A	N/A	N/A
Janesville	N/A	N/A	N/A	N/A	N/A
Milton	N/A	N/A	N/A	N/A	N/A
Orfordville	N/A	N/A	N/A	N/A	N/A
Sharon	N/A	N/A	N/A	N/A	N/A
Stoughton	N/A	N/A	N/A	N/A	N/A
Whitewater	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Property Tax Assessment Values Across Rock County, Wisconsin

When examining property taxes in Rock County, understanding the distinction between "market value" and "assessed value" is crucial. The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Rock County Assessor’s Office estimates the market value for tax purposes. The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill. Assessment notices: In Rock County, assessment notices are sent in the spring each year. They’ll typically reach your mailbox by the middle of April. Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Rock County. For example, the median tax bill in Rock County is $3,180, with tax bills ranging significantly across the county. Evansville has the highest median home price at $263,300.

Property Tax Assessment Values Across Rock County, Wisconsin

Source: Ownwell

$127,800

$195,550

$263,300

Median Rock County Market Value

$91,700

Median Wisconsin Market Value

$200,300

Median United States Market Value

$235,294

Property Tax Assessment Values Across Rock County, Wisconsin

City	10th Percentile	25th Percentile	Median Home Price	75th Percentile	90th Percentile
Afton	$78,460	$115,800	$146,500	$169,250	$193,820
Beloit	$71,200	$93,200	$127,800	$180,600	$250,640
Clinton	$84,100	$131,350	$184,000	$234,800	$315,320
Edgerton	$74,440	$154,800	$223,800	$308,000	$395,040
Evansville	$118,810	$191,000	$263,300	$323,675	$400,490
Footville	$97,460	$118,100	$145,700	$170,700	$193,880
Fort Atkinson	$140,580	$199,700	$236,200	$339,500	$445,800
Albany	N/A	N/A	N/A	N/A	N/A
Avalon	N/A	N/A	N/A	N/A	N/A
Brodhead	N/A	N/A	N/A	N/A	N/A
Brooklyn	N/A	N/A	N/A	N/A	N/A
Darien	N/A	N/A	N/A	N/A	N/A
Delavan	N/A	N/A	N/A	N/A	N/A
Janesville	N/A	N/A	N/A	N/A	N/A
Milton	N/A	N/A	N/A	N/A	N/A
Orfordville	N/A	N/A	N/A	N/A	N/A
Sharon	N/A	N/A	N/A	N/A	N/A
Stoughton	N/A	N/A	N/A	N/A	N/A
Whitewater	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Property Tax Bills Across Rock County, Wisconsin

In Rock County, WI, property tax bills are calculated based on the assessed value of a home, which is determined by local assessors. This assessed value is then multiplied by the property tax rate to determine the annual tax bill. The median home price in Rock County is $91,700, significantly lower than the national median. However, the property tax rate in the county is relatively high, resulting in a median property tax bill that can vary significantly across different areas. For instance, homeowners in Evansville face the highest median tax bill at $4,420, while those in Afton enjoy the lowest at $1,712. The tax bill at the 25th percentile is $2,067, while it rises to $4,292 at the 75th percentile, and reaches $5,712 at the 90th percentile. These taxes fund essential services such as public schools, infrastructure, and emergency services, impacting homeowners by influencing the affordability and desirability of living in different parts of the county.

Property Tax Bills Across Rock County, Wisconsin

Source: Ownwell

$1,712

$3,066

$4,420

Median Rock County Tax Bill

$3,073

Median Wisconsin Tax Bill

$3,346

Median United States Tax Bill

$2,400

Property Tax Bills Across Rock County, Wisconsin

City	10th Percentile	25th Percentile	Median Tax Bill	75th Percentile	90th Percentile
Afton	$1,023	$1,297	$1,712	$2,094	$2,508
Beloit	$1,063	$1,389	$1,925	$2,760	$3,946
Clinton	$2,053	$2,797	$3,748	$4,819	$6,340
Edgerton	$1,122	$2,343	$3,462	$4,637	$5,731
Evansville	$2,476	$3,266	$4,420	$5,446	$6,375
Footville	$1,811	$2,247	$2,876	$3,365	$3,947
Fort Atkinson	$2,327	$2,645	$3,112	$4,558	$6,022
Albany	N/A	N/A	N/A	N/A	N/A
Avalon	N/A	N/A	N/A	N/A	N/A
Brodhead	N/A	N/A	N/A	N/A	N/A
Brooklyn	N/A	N/A	N/A	N/A	N/A
Darien	N/A	N/A	N/A	N/A	N/A
Delavan	N/A	N/A	N/A	N/A	N/A
Janesville	N/A	N/A	N/A	N/A	N/A
Milton	N/A	N/A	N/A	N/A	N/A
Orfordville	N/A	N/A	N/A	N/A	N/A
Sharon	N/A	N/A	N/A	N/A	N/A
Stoughton	N/A	N/A	N/A	N/A	N/A
Whitewater	N/A	N/A	N/A	N/A	N/A

Source: Ownwell