Mchenry County, Illinois Property Taxes
Property Taxes in Mchenry County, Illinois
Median McHenry County effective property tax rate: 2.42%, significantly higher than the national median of 1.02%.
Median McHenry County home value: $297,576
Median annual McHenry County tax bill: $7,056, $4,656 higher than the national median property tax bill of $2,400.
How are property taxes in McHenry County calculated?
Property taxes in McHenry 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 McHenry County or another part of McHenry County, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Mchenry County, Illinois Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
2.42%
Estimate Property Tax Bill
$7,201
$6,683
How Does the McHenry County Property Tax Calculator Work?
Use this McHenry County property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies McHenry County's median effective tax rate of 2.42% to generate your estimate.
Enter your property's estimated assessed value — the value assigned for tax purposes, which is typically lower than market value after applicable exemptions. Our calculator uses the median effective rate for a more accurate estimate than the statutory millage rate alone.
Your actual bill may vary based on your specific exemptions, local school district levies, and any special assessment districts that apply to your property. McHenry County's median property tax bill is $7,056, which is higher than the national median property tax bill of $2,400 and higher than the Illinois median property tax bill by $4,656. The county's rate is also higher than the Illinois median property tax rate of 2.33% and the national median property tax rate of 1.02%.
For a more precise estimate, scroll down to explore city and ZIP code-level tax rate trends across McHenry County.
Property Tax Rates Across Mchenry County, Illinois
What Are Effective Property Tax Rates Across McHenry County?
Local government entities set tax rates, which vary widely across McHenry County. Each year, the county estimates its budget for public services and divides that total by the assessed value of all taxable property within its jurisdiction.
Below, compare McHenry County's effective property tax rate to other counties in Illinois or the U.S. median of 1.02%.
McHenry County's median effective rate stands at 2.42%, which is higher than the national median of 1.02%. Within McHenry County, the highest rate is found in Fox River Grove at 2.88%, while Garden Prairie has the lowest at 1.80%.
These variations reflect differences in local school district levies, Special service areas (SSAs) assessments, and special district bonds — which compound the base county rate.
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 Mchenry County Tax Rate
2.42%
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 Illinois Tax Rate
2.33%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Mchenry County, Illinois
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Algonquin | 2.14% | 2.27% | 2.37% | 2.45% | 2.51% |
| Barrington | 2.08% | 2.21% | 2.28% | 2.34% | 2.42% |
| Bull Valley | 2.43% | 2.53% | 2.63% | 2.70% | 2.78% |
| Cary | 2.18% | 2.40% | 2.55% | 2.64% | 2.81% |
| Crystal Lake | 2.21% | 2.38% | 2.55% | 2.64% | 2.79% |
| Fox Lake | 2.05% | 2.13% | 2.38% | 2.41% | 2.41% |
| Fox River Grove | 1.94% | 2.54% | 2.88% | 3.01% | 3.19% |
| Garden Prairie | 1.41% | 1.58% | 1.80% | 2.21% | 2.39% |
| Harvard | 1.81% | 2.10% | 2.38% | 2.65% | 2.99% |
| Hebron | 1.61% | 1.87% | 2.02% | 2.10% | 2.31% |
| Holiday Hills | 1.92% | 2.24% | 2.39% | 2.45% | 2.72% |
| Huntley | 1.92% | 2.07% | 2.22% | 2.26% | 2.69% |
| Island Lake | 2.12% | 2.27% | 2.38% | 2.60% | 2.65% |
| Johnsburg | 1.92% | 2.09% | 2.18% | 2.25% | 2.34% |
| Lake In The Hills | 2.17% | 2.28% | 2.36% | 2.58% | 2.70% |
| Lakemoor | 2.21% | 2.44% | 2.72% | 2.81% | 3.14% |
| Marengo | 1.57% | 1.71% | 2.05% | 2.27% | 2.53% |
| Mccullom Lake | 1.79% | 2.28% | 2.43% | 2.76% | 2.76% |
| Mchenry | 1.92% | 2.23% | 2.48% | 2.61% | 2.81% |
| Oakwood Hills | 2.26% | 2.47% | 2.58% | 2.64% | 2.84% |
| Port Barrington | 2.13% | 2.23% | 2.34% | 2.37% | 2.49% |
| Richmond | 1.96% | 2.16% | 2.33% | 2.49% | 2.71% |
| Ringwood | 1.94% | 2.06% | 2.17% | 2.21% | 2.30% |
| Spring Grove | 2.07% | 2.20% | 2.35% | 2.40% | 2.50% |
| Trout Valley | 2.36% | 2.41% | 2.52% | 2.55% | 2.66% |
| Union | 1.69% | 1.88% | 1.97% | 2.10% | 2.30% |
| Village Of Lakewood | 2.31% | 2.42% | 2.52% | 2.56% | 2.60% |
| Wonder Lake | 1.89% | 2.15% | 2.39% | 2.51% | 2.94% |
| Woodstock | 2.19% | 2.42% | 2.67% | 2.84% | 3.07% |
| Barrington Hills | N/A | N/A | N/A | N/A | N/A |
| Capron | N/A | N/A | N/A | N/A | N/A |
| Genoa | N/A | N/A | N/A | N/A | N/A |
| Hampshire | N/A | N/A | N/A | N/A | N/A |
| Lake Barrington | N/A | N/A | N/A | N/A | N/A |
| Lakewood | N/A | N/A | N/A | N/A | N/A |
| Prairie Grove | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across Mchenry County, Illinois
When examining property taxes in McHenry 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 McHenry County appraisal district 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 McHenry 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 McHenry County.
For example, the median tax bill in McHenry County is $7,056, well above the national median property tax bill of $2,400. Tax bills range significantly across the county, from $3,967 in McCullom Lake to $17,531 in Barrington, while Barrington also has the highest median home price at $750,345.
Property Tax Assessment Values Across Mchenry County, Illinois
Source: Ownwell
$167,403
$458,643
$749,883
Median Mchenry County Market Value
$297,576
Median Illinois Market Value
$227,888
Median United States Market Value
$235,294
Property Tax Assessment Values Across Mchenry County, Illinois
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Algonquin | $224,658 | $279,099 | $354,918 | $430,386 | $512,578 |
| Barrington | $398,792 | $545,797 | $750,345 | $983,865 | $1,304,828 |
| Bull Valley | $374,999 | $447,327 | $512,490 | $607,329 | $811,237 |
| Cary | $204,171 | $246,609 | $318,986 | $389,799 | $475,235 |
| Crystal Lake | $199,359 | $253,503 | $315,132 | $394,395 | $490,374 |
| Fox Lake | $208,560 | $221,060 | $221,130 | $251,877 | $251,907 |
| Fox River Grove | $167,072 | $223,942 | $291,423 | $356,404 | $434,223 |
| Garden Prairie | $158,250 | $216,426 | $265,224 | $314,754 | $364,668 |
| Harvard | $123,741 | $157,667 | $201,302 | $266,136 | $375,502 |
| Hebron | $115,766 | $183,202 | $227,310 | $297,980 | $401,802 |
| Holiday Hills | $122,342 | $171,172 | $200,445 | $230,649 | $268,641 |
| Huntley | $231,038 | $291,108 | $353,748 | $436,980 | $491,592 |
| Island Lake | $168,462 | $175,854 | $246,213 | $287,649 | $384,570 |
| Johnsburg | $218,438 | $255,129 | $345,921 | $435,408 | $596,632 |
| Lake In The Hills | $198,135 | $237,273 | $316,556 | $363,125 | $412,214 |
| Lakemoor | $143,097 | $174,393 | $201,462 | $241,410 | $299,535 |
| Marengo | $158,989 | $205,700 | $278,691 | $368,814 | $464,383 |
| Mccullom Lake | $117,488 | $142,192 | $167,403 | $210,708 | $252,523 |
| Mchenry | $156,544 | $202,542 | $250,458 | $329,373 | $429,998 |
| Oakwood Hills | $183,614 | $239,712 | $271,626 | $338,193 | $488,996 |
| Port Barrington | $202,170 | $261,113 | $335,241 | $375,037 | $406,530 |
| Richmond | $95,184 | $180,966 | $278,085 | $368,559 | $440,318 |
| Ringwood | $233,827 | $330,699 | $412,596 | $479,151 | $581,752 |
| Spring Grove | $197,770 | $292,966 | $386,838 | $449,524 | $515,889 |
| Trout Valley | $401,661 | $434,529 | $479,496 | $533,775 | $625,575 |
| Union | $178,305 | $221,409 | $308,307 | $393,858 | $481,226 |
| Village Of Lakewood | $283,962 | $376,398 | $512,292 | $610,329 | $713,671 |
| Wonder Lake | $139,534 | $171,365 | $224,818 | $295,330 | $379,971 |
| Woodstock | $152,622 | $194,889 | $266,610 | $348,480 | $442,043 |
| Barrington Hills | N/A | N/A | N/A | N/A | N/A |
| Capron | N/A | N/A | N/A | N/A | N/A |
| Genoa | N/A | N/A | N/A | N/A | N/A |
| Hampshire | N/A | N/A | N/A | N/A | N/A |
| Lake Barrington | N/A | N/A | N/A | N/A | N/A |
| Lakewood | N/A | N/A | N/A | N/A | N/A |
| Prairie Grove | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across Mchenry County, Illinois
Property tax bills in McHenry County are calculated by applying the local tax rate to a home’s assessed value, which is based on the market value of the property. The amount a homeowner owes depends on several factors, including the home’s value, local taxing districts, and any exemptions that may reduce the bill. With a median home price of $297,576, property taxes can vary widely across the county.
For many homeowners, the tax bill is a major part of annual housing costs. The 25th percentile tax bill is $5,133, while the 75th percentile is $9,362 and the 90th percentile reaches $11,747. Some areas see even higher bills, with a highest median tax bill of $17,531 in Barrington, compared with a lowest median tax bill of $3,967 in Mccullom Lake. Because property taxes are tied to assessed value and local budgets, homeowners may see changes even if they have not made improvements to their home.
Median Mchenry County Tax Bill
$7,056
Median Illinois Tax Bill
$5,277
Median United States Tax Bill
$2,400
Property Tax Bills Across Mchenry County, Illinois
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Algonquin | $4,956 | $6,407 | $8,365 | $10,192 | $12,185 |
| Barrington | $8,325 | $11,935 | $17,531 | $22,678 | $30,061 |
| Bull Valley | $8,150 | $11,328 | $13,315 | $16,485 | $22,588 |
| Cary | $4,547 | $6,052 | $8,010 | $10,076 | $13,228 |
| Crystal Lake | $4,283 | $6,122 | $7,845 | $10,061 | $12,632 |
| Fox Lake | $4,280 | $4,779 | $5,255 | $6,075 | $6,075 |
| Fox River Grove | $3,601 | $5,614 | $7,937 | $10,296 | $12,224 |
| Garden Prairie | $2,937 | $3,418 | $4,334 | $6,288 | $7,715 |
| Harvard | $2,404 | $3,664 | $4,868 | $6,264 | $8,020 |
| Hebron | $1,892 | $3,242 | $4,492 | $5,792 | $7,828 |
| Holiday Hills | $1,891 | $3,762 | $4,697 | $5,544 | $6,558 |
| Huntley | $4,665 | $5,949 | $8,100 | $9,904 | $10,942 |
| Island Lake | $3,363 | $4,022 | $5,788 | $6,935 | $9,950 |
| Johnsburg | $4,022 | $5,248 | $7,382 | $9,660 | $13,212 |
| Lake In The Hills | $4,527 | $5,709 | $7,399 | $8,643 | $10,342 |
| Lakemoor | $2,873 | $4,580 | $5,232 | $6,040 | $8,155 |
| Marengo | $2,990 | $4,245 | $5,545 | $7,225 | $8,653 |
| Mccullom Lake | $2,321 | $3,275 | $3,967 | $4,898 | $6,127 |
| Mchenry | $2,987 | $4,526 | $5,919 | $8,101 | $10,820 |
| Oakwood Hills | $4,159 | $5,763 | $6,902 | $8,696 | $12,959 |
| Port Barrington | $4,371 | $5,788 | $7,650 | $8,666 | $9,676 |
| Richmond | $2,575 | $3,717 | $6,146 | $8,477 | $10,263 |
| Ringwood | $4,263 | $6,281 | $8,620 | $10,223 | $12,334 |
| Spring Grove | $3,889 | $6,274 | $8,883 | $10,538 | $12,377 |
| Trout Valley | $9,501 | $10,657 | $11,905 | $13,342 | $15,497 |
| Union | $2,989 | $4,177 | $5,990 | $7,932 | $9,637 |
| Village Of Lakewood | $6,631 | $9,149 | $12,828 | $15,472 | $18,178 |
| Wonder Lake | $2,610 | $3,756 | $5,146 | $7,311 | $9,630 |
| Woodstock | $3,473 | $5,008 | $6,927 | $9,198 | $11,309 |
| Barrington Hills | N/A | N/A | N/A | N/A | N/A |
| Capron | N/A | N/A | N/A | N/A | N/A |
| Genoa | N/A | N/A | N/A | N/A | N/A |
| Hampshire | N/A | N/A | N/A | N/A | N/A |
| Lake Barrington | N/A | N/A | N/A | N/A | N/A |
| Lakewood | N/A | N/A | N/A | N/A | N/A |
| Prairie Grove | 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 | |
|---|---|
| McHenry Tax Assessor | |
| Website | mchenryil.devnetwedge.com |
Frequently Asked Property Tax Questions in Mchenry County, Illinois
How are property taxes calculated in Mchenry County, Illinois?
How do I appeal my property taxes in Mchenry County, Illinois?
What property tax exemptions are available in Mchenry County, Illinois?
When are property taxes due in Mchenry County, Illinois?
How can Ownwell help reduce my property taxes in Mchenry County, Illinois?
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