Mason County, Illinois Property Taxes
Property Taxes in Mason County, Illinois
Median Mason County effective property tax rate: 3.12%, significantly higher than the national median of 1.02%.
Median Mason County home value: $72,273
Median annual Mason County tax bill: $2,327, $73 lower than the national median property tax bill of $2,400.
How are property taxes in Mason County calculated?
Property taxes in Mason 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 Mason County or another part of Mason County, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Mason County, Illinois Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
3.12%
Estimate Property Tax Bill
$2,255
$2,093
How Does the Mason County Property Tax Calculator Work?
Use this Mason County property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Mason County's median effective tax rate of 3.12% to generate your estimate.
Enter your property's estimated assessed value — the figure the assessment district assigns 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. Mason County's median tax rate is higher than Illinois's 2.33% median rate, while the county's median tax bill of $2,327 is $73 lower than the state median bill.
For a more precise estimate, scroll down to explore city and ZIP code-level tax rate trends across Mason County.
Property Tax Rates Across Mason County, Illinois
What Are Effective Property Tax Rates Across Mason County?
Local government entities set tax rates, which vary widely across Mason 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 Mason County's effective property tax rate to other counties in Illinois or the U.S. median of 1.02%.
Mason County's median effective rate stands at 3.12%, which is higher than the national median of 1.02%. Within Mason County, the highest rate is found in HAVANA at 3.49%, while BATH has the lowest at 2.89%.
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 Ă· 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 Mason County Tax Rate
3.12%
Our median effective property tax rate (tax bill Ă· 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 Mason County, Illinois
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Bath | 1.70% | 2.27% | 2.89% | 3.42% | 3.88% |
| Easton | 2.44% | 2.78% | 3.38% | 4.13% | 5.01% |
| Forest City | 2.74% | 3.05% | 3.45% | 4.31% | 4.63% |
| Havana | 2.29% | 2.72% | 3.49% | 4.06% | 4.57% |
| Kilbourne | 2.27% | 2.58% | 3.09% | 3.95% | 4.98% |
| Manito | 2.43% | 2.73% | 3.00% | 3.48% | 4.14% |
| Mason City | 2.45% | 2.80% | 3.02% | 3.23% | 3.53% |
| San Jose | 2.53% | 2.79% | 2.99% | 3.68% | 4.18% |
| Topeka | 2.47% | 2.75% | 3.25% | 3.72% | 4.52% |
| Chandlerville | N/A | N/A | N/A | N/A | N/A |
| New Holland | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across Mason County, Illinois
When examining property taxes in Mason 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 Mason 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 Mason 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. The median tax bill in Mason County is $2,327, compared with the national median property tax bill of $2,400 and the national median property tax rate of 1.02%. Mason City has the highest median home price at $114,099.
Median Mason County Market Value
$72,273
Median Illinois Market Value
$227,888
Median United States Market Value
$235,294
Property Tax Assessment Values Across Mason County, Illinois
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Bath | $3,853 | $21,342 | $46,558 | $102,343 | $169,717 |
| Easton | $11,266 | $23,422 | $67,542 | $113,485 | $173,903 |
| Forest City | $23,220 | $33,726 | $76,008 | $131,025 | $182,898 |
| Havana | $8,958 | $25,948 | $59,832 | $105,794 | $161,076 |
| Kilbourne | $8,345 | $37,924 | $68,848 | $122,356 | $181,388 |
| Manito | $16,453 | $31,612 | $75,246 | $119,192 | $185,530 |
| Mason City | $19,623 | $54,062 | $114,099 | $186,437 | $245,876 |
| San Jose | $27,692 | $57,056 | $112,674 | $153,581 | $241,625 |
| Topeka | $11,332 | $23,138 | $64,575 | $112,523 | $167,542 |
| Chandlerville | N/A | N/A | N/A | N/A | N/A |
| New Holland | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across Mason County, Illinois
Property tax bills in Mason County are based on the assessed value of a home and the local tax rate set by taxing authorities. When a property’s assessed value rises, the tax bill can increase even if the homeowner’s income does not change. The county’s median home price is $72,273, which helps explain why tax bills can vary widely from one property to another.
Homeowners in Mason County typically see a wide range of tax bills. The 25th percentile tax bill is $1,123, while the 75th percentile is $4,256 and the 90th percentile is $6,147. That spread shows how differences in assessed value and local levies can significantly affect what residents owe each year.
Tax bills also vary by city. The highest median tax bill is $3,639 in Mason City, while the lowest median tax bill is $1,619 in Bath. For homeowners, this means location, property characteristics, and assessment outcomes all play a major role in determining annual property taxes.
Median Mason County Tax Bill
$2,327
Median Illinois Tax Bill
$5,277
Median United States Tax Bill
$2,400
Property Tax Bills Across Mason County, Illinois
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Bath | $291 | $772 | $1,619 | $3,141 | $5,030 |
| Easton | $377 | $924 | $2,209 | $4,216 | $5,477 |
| Forest City | $799 | $1,596 | $3,234 | $5,240 | $5,956 |
| Havana | $429 | $897 | $2,053 | $3,471 | $5,236 |
| Kilbourne | $531 | $1,230 | $2,271 | $3,955 | $5,721 |
| Manito | $610 | $1,209 | $2,478 | $4,093 | $6,020 |
| Mason City | $680 | $1,778 | $3,639 | $5,475 | $7,704 |
| San Jose | $997 | $1,655 | $3,559 | $5,342 | $6,894 |
| Topeka | $357 | $840 | $2,232 | $3,734 | $5,556 |
| Chandlerville | N/A | N/A | N/A | N/A | N/A |
| New Holland | 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 | |
|---|---|
| Mason Tax Assessor | |
| Website | masonil.devnetwedge.com |