Stillman Valley, Winnebago County, Illinois Property Taxes
Property Taxes in Stillman Valley, Illinois
Median Stillman Valley, Illinois effective property tax rate: 2.47%, significantly higher than the national median of 1.02%, and higher than the Illinois state median of 2.33%.
Median Stillman Valley, Illinois home value: $292,437
Median annual Stillman Valley, Illinois tax bill: $6,965, $4,565 higher than the national median property tax bill of $2,400.
How are property taxes in Winnebago calculated?
Property taxes in Stillman Valley, 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 Stillman Valley's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Stillman Valley, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Stillman Valley, Winnebago County, Illinois Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
2.47%
Estimate Property Tax Bill
$7,223
$6,703
How Does the Stillman Valley Property Tax Calculator Work?
Use this Stillman Valley property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Stillman Valley's median effective tax rate of 2.47% — based on actual property records in Winnebago 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 Stillman Valley'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 Stillman Valley: rates range from 2.47% in 61084 to 2.47% in 61084, 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 Stillman Valley.
About Stillman Valley Property Taxes
About Property Taxes in Stillman Valley, Winnebago, Illinois
Stillman Valley’s median effective property tax rate of 2.47% is higher than the Illinois state median of 2.33% and higher than the national median of 1.02%. This rate reflects the Winnebago County base levy combined with local school district levies and special service areas that can vary by subdivision throughout the city.
Property tax rates are not uniform across Stillman Valley. Homeowners in the 61084 ZIP code carry a median effective rate of 2.47%, while those in the same ZIP also pay 2.47%. This spread reflects how school district boundaries and local assessment districts are drawn across Winnebago County.
Stillman Valley homeowners who believe their assessed value is too high can file a formal appeal with the Tax Assessor before the June 1, 2026 deadline each year.
If your estimated bill above 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 Stillman Valley, Winnebago 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 Stillman Valley's effective property tax rate to other cities in Illinois and the median property tax rates in Illinois and the U.S.
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 Stillman Valley Tax Rate
2.47%
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 Winnebago County Tax Rate
2.49%
Median Effective Illinois Tax Rate
2.33%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Stillman Valley, Winnebago County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 61084 | 2.23% | 2.39% | 2.47% | 2.55% | 2.57% |
Source: Ownwell
Property Tax Assessment Values Across Stillman Valley, Winnebago County, Illinois
When examining property taxes in Stillman Valley, 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 Winnebago 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 Winnebago County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of July.
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 home price in Stillman Valley is $292,437, while the median tax bill is $6,965, above the national median property tax bill of $2,400. Tax bills range from $5,082 at the 25th percentile to $10,335 at the 90th percentile.
Property Tax Assessment Values Across Stillman Valley, Winnebago County, Illinois
Source: Ownwell
$3,897
$148,167
$292,437
Median Stillman Valley Market Value
$292,437
Median Winnebago County Market Value
$151,126
Median Illinois Market Value
$227,888
Median United States Market Value
$235,294
Property Tax Assessment Values Across Stillman Valley, Winnebago County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 61084 | $201,636 | $220,428 | $292,437 | $361,389 | $402,003 |
Source: Ownwell
Property Tax Bills Across Stillman Valley, Winnebago County, Illinois
Property tax bills in Stillman Valley are based on the assessed value of a home and the local tax rate set by taxing authorities in Winnebago County. When a home’s market value changes, its assessed value can change too, which affects the final bill. Local budgets for schools, public safety, roads, and other services also play a role in determining how much homeowners owe.
With a median home price of $292,437, property taxes can be a major part of homeownership costs. The median tax bill in the area is $6,965, which is well above the national median property tax bill of $2,400 and the national median property tax rate of 1.02%. Bills often vary widely, with the 25th percentile at $5,082 and the 75th percentile at $8,889.
For homeowners, that means two similar homes can still have very different tax bills depending on assessment and local tax rates.
Median Stillman Valley Tax Bill
$6,965
Median Winnebago County Tax Bill
$3,565
Median Illinois Tax Bill
$5,277
Median United States Tax Bill
$2,400
Property Tax Bills Across Stillman Valley, Winnebago County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 61084 | $3,855 | $5,082 | $6,965 | $8,889 | $10,335 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | June 1 |
Links | |
|---|---|
| Winnebago Tax Assessor | |
| Website | taxes.wincoil.gov |