Port Byron, Rock Island County, Illinois Property Taxes
Property Taxes in Port Byron, Illinois
Median Port Byron, Illinois effective property tax rate: 3.22%, significantly higher than the national median of 1.02%, and higher than the Illinois state median of 2.33%.
Median Port Byron, Illinois home value: $158,283
Median annual Port Byron, Illinois tax bill: $5,679, $3,279 higher than the national median property tax bill of $2,400.
How are property taxes in Rock Island calculated?
Property taxes in Port Byron, 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 Port Byron's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Port Byron, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Port Byron, Rock Island County, Illinois Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
3.22%
Estimate Property Tax Bill
$5,097
$4,730
How Does the Port Byron Property Tax Calculator Work?
Use this Port Byron property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Port Byron's median effective tax rate of 3.22% — based on actual property records in Rock Island 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 Port Byron'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 Port Byron: rates are 3.22% in 61275, 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 Port Byron.
About Port Byron Property Taxes
About Property Taxes in Port Byron, Rock Island, Illinois
Port Byron’s median effective property tax rate of 3.22% is higher than the Illinois state median of 2.33% and higher than the national median of 1.02%. This rate reflects the Rock Island 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 Port Byron. Homeowners in ZIP code 61275 carry a median effective rate of 3.22%, while those in the same ZIP code also pay 3.22%. This reflects how school district boundaries and local assessment districts are drawn across Rock Island County. Understanding which part of Port Byron you live in can make a meaningful difference to your annual tax bill.
Port Byron 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 Port Byron, Rock Island 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 Port Byron'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 ÷ 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 Port Byron Tax Rate
3.22%
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 Rock Island County Tax Rate
2.93%
Median Effective Illinois Tax Rate
2.33%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Port Byron, Rock Island County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 61275 | 2.40% | 2.70% | 3.22% | 3.89% | 4.85% |
Source: Ownwell
Property Tax Assessment Values Across Port Byron, Rock Island County, Illinois
When examining property taxes in Port Byron, 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 Rock Island 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 Rock Island County, assessment notices are sent in September each year. They'll typically reach your mailbox by the middle of September.
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 Port Byron.
For example, the median home price in Port Byron is $158,283, with tax bills ranging significantly across the county. 61275 has the highest median home price at $158,283.
Property Tax Assessment Values Across Port Byron, Rock Island County, Illinois
Source: Ownwell
$110,655
$166,860
$223,064
Median Port Byron Market Value
$158,283
Median Rock Island County Market Value
$121,995
Median Illinois Market Value
$227,888
Median United States Market Value
$235,294
Property Tax Assessment Values Across Port Byron, Rock Island County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 61275 | $62,313 | $106,530 | $158,283 | $239,163 | $315,693 |
Source: Ownwell
Property Tax Bills Across Port Byron, Rock Island County, Illinois
Property tax bills in Port Byron are calculated based on the assessed value of a home and the local tax rate set by taxing authorities in Rock Island County. When a property’s market value changes, its assessed value can change as well, which can affect the final bill. The amount a homeowner owes also depends on local levies for schools, roads, public safety, and other services that fund the community.
For Port Byron homeowners, the bill can vary widely depending on the home’s value and the specific tax rate applied. With a median home price of $158,283, property taxes can represent a significant annual expense. In this area, the median tax bill is $5,679, which is well above the national median property tax bill of $2,400 and the national median property tax rate of 1.02%. Higher assessed values or rising local rates can increase the bill, while successful appeals or exemptions may help reduce it.
Median Port Byron Tax Bill
$5,679
Median Rock Island County Tax Bill
$3,439
Median Illinois Tax Bill
$5,277
Median United States Tax Bill
$2,400
Property Tax Bills Across Port Byron, Rock Island County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 61275 | $2,645 | $3,900 | $5,679 | $7,729 | $10,484 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | June 1 |
Links | |
|---|---|
| Rock Island Tax Assessor | |
| Website | rockislandil.devnetwedge.com |