Boone County, Illinois Property Taxes

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

Median Boone County effective property tax rate: 2.69%, significantly higher than the national median of 1.02%.
Median Boone County home value: $166,186
Median annual Boone County tax bill: $4,339, $1,939 higher than the national median property tax bill of $2,400.

How are property taxes in Boone County calculated?

Property taxes in Boone 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 Belvidere or another part of Boone County, knowing local tax details benefits homeowners and investors.

Last Updated March 1, 2025

Boone County, Illinois Property Tax Bill Calculator

Property Assessed Value

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

2.69%

Estimate Property Tax Bill

$4,470

$4,148

Ownwell’s Boone County Property Tax Bill Calculator empowers homeowners, real estate investors, and potential buyers to estimate their annual property taxes in Boone County with just two data points. By entering your property's estimated assessed value, our calculator applies Boone 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 Boone County. For those interested in more localized information, please scroll down to explore city-level trends!

Property Tax Rates Across Boone County, Illinois

Local government entities set tax rates, and these can vary significantly within Illinois. Each county, like Boone, annually estimates its required budget to provide essential services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate. While votes and laws play a role in setting tax rates and budgets, this is the core of the annual process. Boone County's effective property tax rate stands out when compared to other counties in Illinois and the U.S. median property tax rate of 1.02%. Boone's rate is notably higher, reflecting the county's budgetary needs and the value of its taxable properties. Within Boone County, Capron has the highest median tax rate, while Kingston boasts the lowest. These variations highlight the impact of local governance and economic factors on property tax rates. Understanding these differences can empower property owners to make informed decisions about their taxes and explore potential appeals or exemptions.

Property Tax Rates Across Boone County, Illinois

Source: Ownwell

2.53%

2.70%

2.87%

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 Boone County Tax Rate

2.69%

Median Effective Illinois Tax Rate

2.35%

Median Effective United States Tax Rate

1.02%

Property Tax Rates Across Boone County, Illinois

City	10th Percentile	25th Percentile	Median Tax Rate	75th Percentile	90th Percentile
Belvidere	2.20%	2.52%	2.72%	2.98%	3.23%
Caledonia	2.29%	2.46%	2.64%	2.76%	2.89%
Capron	2.32%	2.71%	2.87%	3.11%	3.26%
Cherry Valley	2.26%	2.58%	2.77%	2.97%	3.02%
Garden Prairie	2.02%	2.34%	2.54%	2.73%	2.80%
Harvard	2.38%	2.65%	2.78%	2.98%	3.13%
Kingston	2.34%	2.43%	2.53%	2.76%	2.76%
Kirkland	2.27%	2.39%	2.56%	2.77%	2.80%
Loves Park	2.45%	2.63%	2.74%	2.77%	2.80%
Poplar Grove	2.17%	2.38%	2.64%	2.78%	2.98%
Rockford	2.47%	2.54%	2.65%	2.68%	2.74%
Roscoe	2.50%	2.62%	2.71%	2.85%	2.97%
South Beloit	2.23%	2.58%	2.74%	2.97%	3.00%
Genoa	N/A	N/A	N/A	N/A	N/A
Marengo	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Property Tax Assessment Values Across Boone County, Illinois

When examining property taxes in Boone 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 Boone County Assessor 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 Boone 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 Boone County. For example, the median tax bill in Boone County is $5,762, with tax bills ranging significantly across the county. Rockford has the highest median home price at $312,510.

Property Tax Assessment Values Across Boone County, Illinois

Source: Ownwell

$148,732

$234,346

$319,959

Median Boone County Market Value

$166,186

Median Illinois Market Value

$194,700

Median United States Market Value

$235,294

Property Tax Assessment Values Across Boone County, Illinois

City	10th Percentile	25th Percentile	Median Home Price	75th Percentile	90th Percentile
Belvidere	$20,643	$98,269	$148,732	$220,585	$302,096
Caledonia	$119,215	$175,665	$257,043	$378,891	$495,620
Capron	$72,132	$108,864	$153,303	$196,035	$284,970
Cherry Valley	$151,954	$189,768	$252,462	$315,646	$374,914
Garden Prairie	$80,202	$114,771	$184,194	$255,177	$340,924
Harvard	$85,031	$148,610	$186,312	$240,218	$304,770
Kingston	$77,657	$141,942	$157,110	$211,749	$248,355
Kirkland	$124,005	$167,497	$243,076	$315,787	$398,029
Loves Park	$184,887	$247,034	$271,362	$308,271	$335,565
Poplar Grove	$88,749	$140,276	$166,598	$213,416	$281,084
Rockford	$238,719	$272,824	$312,510	$363,371	$450,518
Roscoe	$157,502	$201,846	$263,072	$320,520	$379,091
South Beloit	$111,453	$148,443	$196,452	$273,246	$339,462
Genoa	N/A	N/A	N/A	N/A	N/A
Marengo	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Property Tax Bills Across Boone County, Illinois

In Boone County, IL, 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 local tax rate to calculate the property tax bill. The median home price in Boone County is $166,186, which helps provide a baseline for understanding local tax bills. Homeowners in Boone County can expect a range of tax bills, with the 25th percentile at $2,896 and the 75th percentile reaching $6,627. Those at the 90th percentile see bills as high as $8,694. Comparatively, Rockford has the highest median tax bill in the area at $8,149, while Kingston boasts the lowest at $3,764. The property tax rate in Boone County is higher than the national median property tax rate of 1.02%, which can significantly impact homeowners' annual expenses. Understanding these factors is crucial for homeowners to anticipate their financial obligations and plan accordingly.

Property Tax Bills Across Boone County, Illinois

Source: Ownwell

$3,764

$6,003

$8,242

Median Boone County Tax Bill

$4,339

Median Illinois Tax Bill

$4,715

Median United States Tax Bill

$2,400

Property Tax Bills Across Boone County, Illinois

City	10th Percentile	25th Percentile	Median Tax Bill	75th Percentile	90th Percentile
Belvidere	$646	$2,516	$3,949	$6,123	$8,082
Caledonia	$2,797	$4,322	$6,689	$10,088	$13,573
Capron	$1,291	$2,937	$4,276	$5,606	$8,321
Cherry Valley	$3,151	$4,749	$6,955	$9,189	$10,860
Garden Prairie	$1,664	$2,668	$4,513	$6,514	$8,795
Harvard	$2,354	$4,204	$4,993	$6,408	$7,991
Kingston	$2,005	$3,433	$3,764	$5,326	$6,353
Kirkland	$3,295	$4,086	$6,326	$7,960	$10,236
Loves Park	$5,131	$6,644	$7,416	$8,568	$9,531
Poplar Grove	$2,241	$3,345	$4,196	$5,783	$7,551
Rockford	$5,936	$7,094	$8,149	$9,474	$11,867
Roscoe	$3,416	$5,268	$6,889	$8,903	$10,661
South Beloit	$3,000	$3,586	$5,286	$7,336	$9,472
Genoa	N/A	N/A	N/A	N/A	N/A
Marengo	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

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Caledonia Capron Cherry Valley