Whiteside County, Illinois Property Taxes
Property Taxes in Whiteside County, Illinois
Median Whiteside County effective property tax rate: 2.36%, significantly higher than the national median of 1.02%.
Median Whiteside County home value: $107,532
Median annual Whiteside County tax bill: $2,559, $159 higher than the national median property tax bill of $2,400.
How are property taxes in Whiteside County calculated?
Property taxes in Whiteside 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 Whiteside County or another part of Whiteside County, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Whiteside County, Illinois Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
2.36%
Estimate Property Tax Bill
$2,538
$2,355
How Does the Whiteside County Property Tax Calculator Work?
Use this Whiteside County property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Whiteside County's median effective tax rate of 2.36% to generate your estimate.
Enter your property's estimated assessed value — the figure the appraisal 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. Whiteside County's median effective tax rate is higher than the national median property tax rate of 1.02% and higher than the state median tax rate of 2.33%. The county's median property tax bill of $2,559 is also higher than the national median property tax bill of $2,400 and $159 higher than the state median.
For a more precise estimate, scroll down to explore city and ZIP code-level tax rate trends across Whiteside County.
Property Tax Rates Across Whiteside County, Illinois
What Are Effective Property Tax Rates Across Whiteside County?
Local government entities set tax rates, which vary widely across Whiteside 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 Whiteside County's effective property tax rate to other counties in Illinois or the U.S. median of 1.02%.
Whiteside County's median effective rate stands at 2.36%, which is higher than the national median of 1.02%. Within Whiteside County, the highest rate is found in Rock Falls at 2.73%, while Coleta has the lowest at 1.84%.
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 Whiteside County Tax Rate
2.36%
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 Whiteside County, Illinois
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Albany | 1.44% | 1.85% | 2.31% | 2.49% | 2.77% |
| Chadwick | 1.86% | 2.24% | 2.54% | 2.68% | 2.91% |
| Coleta | 0.79% | 1.49% | 1.84% | 2.03% | 2.28% |
| Deer Grove | 1.42% | 1.83% | 2.09% | 2.29% | 2.29% |
| Erie | 1.28% | 1.66% | 1.88% | 2.04% | 2.30% |
| Fenton | 1.16% | 1.57% | 1.85% | 1.94% | 2.04% |
| Fulton | 1.49% | 1.95% | 2.20% | 2.38% | 2.67% |
| Galt | 1.08% | 1.56% | 1.92% | 2.11% | 2.26% |
| Lyndon | 1.25% | 1.91% | 2.29% | 2.56% | 2.86% |
| Morrison | 1.45% | 1.92% | 2.17% | 2.37% | 2.72% |
| Prophetstown | 1.35% | 1.96% | 2.28% | 2.54% | 2.84% |
| Rock Falls | 1.48% | 2.29% | 2.73% | 3.07% | 3.66% |
| Sterling | 1.58% | 2.07% | 2.59% | 3.01% | 3.48% |
| Tampico | 1.18% | 1.74% | 2.06% | 2.29% | 2.62% |
| Geneseo | N/A | N/A | N/A | N/A | N/A |
| Harmon | N/A | N/A | N/A | N/A | N/A |
| Milledgeville | N/A | N/A | N/A | N/A | N/A |
| Polo | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across Whiteside County, Illinois
When examining property taxes in Whiteside 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 Whiteside 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 Whiteside 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 Whiteside County.
For example, the median tax bill in Whiteside County is $2,559, compared with the national median property tax bill of $2,400. Chadwick has the highest median home price at $149,319.
Property Tax Assessment Values Across Whiteside County, Illinois
Source: Ownwell
$90,776
$120,048
$149,319
Median Whiteside County Market Value
$107,532
Median Illinois Market Value
$227,888
Median United States Market Value
$235,294
Property Tax Assessment Values Across Whiteside County, Illinois
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Albany | $62,213 | $106,568 | $142,272 | $181,684 | $238,412 |
| Chadwick | $68,845 | $115,612 | $149,319 | $210,910 | $241,822 |
| Coleta | $49,896 | $73,146 | $96,060 | $118,956 | $150,420 |
| Deer Grove | $56,076 | $80,865 | $112,222 | $166,986 | $304,757 |
| Erie | $59,417 | $93,633 | $137,166 | $180,801 | $234,524 |
| Fenton | $55,943 | $95,145 | $145,743 | $215,544 | $270,463 |
| Fulton | $55,725 | $85,911 | $128,094 | $183,022 | $250,782 |
| Galt | $44,850 | $74,914 | $119,118 | $164,010 | $191,061 |
| Lyndon | $29,388 | $59,435 | $90,776 | $128,155 | $167,860 |
| Morrison | $59,952 | $84,942 | $118,335 | $167,544 | $225,037 |
| Prophetstown | $52,849 | $81,249 | $111,444 | $161,078 | $221,423 |
| Rock Falls | $47,744 | $70,190 | $94,587 | $137,380 | $192,806 |
| Sterling | $51,647 | $74,829 | $104,394 | $159,264 | $235,228 |
| Tampico | $30,813 | $65,283 | $94,272 | $127,359 | $162,075 |
| Geneseo | N/A | N/A | N/A | N/A | N/A |
| Harmon | N/A | N/A | N/A | N/A | N/A |
| Milledgeville | N/A | N/A | N/A | N/A | N/A |
| Polo | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across Whiteside County, Illinois
Property tax bills in Whiteside County are based on the assessed value of a home and the local tax rates set by taxing authorities. When a home’s market value changes, the assessed value may change too, which can affect the final bill. Local budgets for schools, county services, and other public needs also play a role in determining how much homeowners owe.
With a median home price of $107,532, property taxes can still vary widely from one homeowner to another. The typical tax bill in the county sits between $1,666 at the 25th percentile and $3,761 at the 75th percentile, with the 90th percentile reaching $5,334. That means some homeowners pay well below the national median property tax bill of $2,400, while others pay much more.
Bills also differ by location within the county. For example, Chadwick has the highest median tax bill at $3,575, while Coleta has the lowest at $1,596.
Median Whiteside County Tax Bill
$2,559
Median Illinois Tax Bill
$5,277
Median United States Tax Bill
$2,400
Property Tax Bills Across Whiteside County, Illinois
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Albany | $1,064 | $1,957 | $2,950 | $4,122 | $5,499 |
| Chadwick | $1,469 | $2,477 | $3,575 | $5,252 | $6,669 |
| Coleta | $727 | $941 | $1,596 | $2,225 | $2,957 |
| Deer Grove | $569 | $1,441 | $2,103 | $3,391 | $6,597 |
| Erie | $861 | $1,599 | $2,381 | $3,385 | $4,614 |
| Fenton | $584 | $1,417 | $2,435 | $4,059 | $4,948 |
| Fulton | $963 | $1,677 | $2,636 | $3,930 | $5,548 |
| Galt | $428 | $1,148 | $1,957 | $2,961 | $4,000 |
| Lyndon | $544 | $1,016 | $1,884 | $2,808 | $3,721 |
| Morrison | $1,037 | $1,668 | $2,475 | $3,618 | $4,996 |
| Prophetstown | $875 | $1,608 | $2,423 | $3,515 | $5,219 |
| Rock Falls | $874 | $1,652 | $2,550 | $3,680 | $5,223 |
| Sterling | $1,071 | $1,784 | $2,702 | $4,049 | $5,700 |
| Tampico | $552 | $1,093 | $1,747 | $2,593 | $3,405 |
| Geneseo | N/A | N/A | N/A | N/A | N/A |
| Harmon | N/A | N/A | N/A | N/A | N/A |
| Milledgeville | N/A | N/A | N/A | N/A | N/A |
| Polo | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | June 1 |
Links | |
|---|---|
| Whiteside Tax Assessor | |
| Website | whitesideil.devnetwedge.com |
Frequently Asked Property Tax Questions in Whiteside County, Illinois
How are property taxes calculated in Whiteside County, Illinois?
How do I appeal my property taxes in Whiteside County, Illinois?
What property tax exemptions are available in Whiteside County, Illinois?
When are property taxes due in Whiteside County, Illinois?
How can Ownwell help reduce my property taxes in Whiteside County, Illinois?
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