Marengo, Boone County, Illinois Property Taxes

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Property Taxes in Marengo, Illinois

Median Marengo, Illinois effective property tax rate: 2.22%, significantly lower than the national median of 1.02%, and lower than the Illinois state median of 2.33%.
Median Marengo, Illinois home value: $271,398
Median annual Marengo, Illinois tax bill: $5,364, higher than the national median property tax bill of $2,400.

How are property taxes in Boone calculated?

Property taxes in Marengo, Illinois 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 Marengo's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Marengo, knowing local tax details benefits homeowners and investors.

Last Updated April 13, 2026

Marengo, Boone County, Illinois Property Tax Bill Calculator

Property Assessed Value

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

2.22%

Estimate Property Tax Bill

$6,025

$5,591

How Does the Marengo Property Tax Calculator Work?

Use this Marengo property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Marengo's median effective tax rate of 2.22% — based on actual property records in Boone County — to generate your estimate.

Enter your property's estimated assessed value — the figure the local assessment process uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Marengo's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.

Your bill may vary by ZIP code within Marengo: rates range across local districts, primarily due to differences in school district levies and local assessment districts.

For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Marengo.

Marengo's median property tax rate of 2.22% is higher than the Illinois median of 2.33%, and the median property tax bill of $5,364 is higher than the national median bill of $2,400 by $2,964.

About Marengo Property Taxes

About Property Taxes in Marengo, Boone, Illinois

Marengo's median effective property tax rate of 2.22% is lower than the Illinois state median of 2.33% and higher than the national median of 1.02%. This rate reflects the Boone County base levy combined with local school district levies and special service areas that vary by subdivision throughout the city.

Property tax rates are not uniform across Marengo. Homeowners in different parts of the city can face different tax burdens because school district boundaries and local assessment districts are drawn across Boone County. Understanding where your home sits can make a meaningful difference to your annual tax bill.

Marengo homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before June 1, 2026.

If your estimated bill seems higher than expected, Ownwell can review your assessment and protest on your behalf. You only pay if we save you money.

Property Tax Rates Across Marengo, Boone County, Illinois

As noted earlier, local government entities set tax rates, which can vary widely within a state.

Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate.

While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.

Below, you can compare Marengo's effective property tax rate to other cities in Illinois and the median property tax rates in Illinois and the U.S.

Property Tax Rates Across Marengo, Boone County, Illinois

Source: Ownwell

2.27%

2.47%

2.66%

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 Marengo Tax Rate

2.22%

Median Effective Boone County Tax Rate

2.48%

Median Effective Illinois Tax Rate

2.33%

Median Effective United States Tax Rate

1.02%

Property Tax Rates Across Marengo, Boone County, Illinois

Zip	10th Percentile	25th Percentile	Median Tax Rate	75th Percentile	90th Percentile
60152	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Property Tax Assessment Values Across Marengo, Boone County, Illinois

When examining property taxes in Marengo, Illinois, 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 assessment 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 Boone County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of May.

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 Marengo.

For example, the median home price in Marengo is $271,398, with tax bills ranging significantly across the county. The median property tax bill is $5,364, compared with the national median property tax bill of $2,400 and the national median property tax rate of 1.02%.

Property Tax Assessment Values Across Marengo, Boone County, Illinois

Source: Ownwell

$183,606

$281,940

$380,274

Median Marengo Market Value

$271,398

Median Boone County Market Value

$205,580

Median Illinois Market Value

$227,888

Median United States Market Value

$235,294

Property Tax Assessment Values Across Marengo, Boone County, Illinois

Zip	10th Percentile	25th Percentile	Median Home Price	75th Percentile	90th Percentile
60152	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Property Tax Bills Across Marengo, Boone County, Illinois

How are property tax bills calculated in Marengo?

Property tax bills in Marengo are based on the assessed value of a home, which is then multiplied by the local tax rate. The assessed value is influenced by the market value of the property and the taxing jurisdictions that apply to the home. Because these taxes are tied to local assessments, two homes with similar market values can still have different bills if they fall under different taxing authorities.

What factors affect the amount homeowners pay?

For Marengo homeowners, the size of the tax bill depends on the home’s assessed value and the local rates set by taxing bodies in Boone County. With a median home price of $271,398, property taxes can be a significant part of ownership costs. The 25th percentile tax bill is $4,166, while the 75th percentile is $6,797 and the 90th percentile is $7,724. That means many homeowners pay well above the national median property tax bill of $2,400, making it important to understand how assessments affect annual costs.

Property Tax Bills Across Marengo, Boone County, Illinois

Source: Ownwell

$4,349

$6,835

$9,321

Median Marengo Tax Bill

$5,364

Median Boone County Tax Bill

$4,861

Median Illinois Tax Bill

$5,277

Median United States Tax Bill

$2,400

Property Tax Bills Across Marengo, Boone County, Illinois

Zip	10th Percentile	25th Percentile	Median Tax Bill	75th Percentile	90th Percentile
60152	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Don't miss the deadline to appeal!

Dates
Appeal Deadline	July 1

Links
Boone Tax Assessor
Website	booneil.devnetwedge.com

Frequently Asked Property Tax Questions in Marengo, Illinois

How are property taxes calculated in Marengo, Illinois?

Property taxes in Marengo, Illinois are calculated by multiplying your property's assessed value by the applicable tax rate set by local taxing authorities. The assessed value is determined by the county assessor and may differ from your property's market value depending on local assessment ratios and exemptions.

How do I appeal my property taxes in Marengo, Illinois?

To appeal your property taxes in Marengo, Illinois, you typically need to file a formal protest or appeal with your local appraisal district or assessor's office by the stated deadline. You'll need evidence such as comparable sales, a recent independent appraisal, or documentation of property condition issues. Ownwell can handle this entire process for you.

What property tax exemptions are available in Marengo, Illinois?

Common property tax exemptions in Marengo, Illinois include homestead exemptions for primary residences, senior citizen exemptions, veteran exemptions, and disability exemptions. Exemption amounts and eligibility requirements vary by county. Contact your local appraisal district or check Ownwell for details specific to your property.

When are property taxes due in Marengo, Illinois?

Property tax deadlines in Marengo, Illinois vary by county but typically include an assessment notice period in spring or early summer, followed by an appeal deadline, and a tax payment due date in the fall or winter. Check with your county assessor's office for specific dates in your area.

How can Ownwell help reduce my property taxes in Marengo, Illinois?

Ownwell provides professional property tax appeal services in Marengo, Illinois. Our team analyzes your assessment, gathers evidence, files all paperwork, and represents you at hearings — all with no upfront cost. You only pay a percentage of your savings if we successfully lower your tax bill.