Property Tax in Winnebago County, Illinois
The median real estate tax bill in Winnebago County, Illinois is $3,850 per year, and the median home is worth $155,100. Both figures are the US Census Bureau's survey medians for owner-occupied households (US Census Bureau, American Community Survey (ACS) 5-year estimates, 2023).
What the Winnebago County numbers mean
Read the two medians together: $3,850 is the middle tax bill among owner-occupied households in Winnebago County, and $155,100 is the middle home value. Neither figure describes a specific property — together they describe the typical homeowner's situation in the county.
The derived effective rate for Winnebago County is 2.48% (median tax ÷ median value). Treat it as an estimate for comparison only: it comes from survey medians of different households, not from the county's rate schedule.
The key figures for Winnebago County
| Measure | Winnebago County |
|---|---|
| Median real estate taxes paid per year | $3,850 |
| Median home value | $155,100 |
| Derived effective rate* | 2.48% |
| Equivalent monthly tax | $321 |
| Tax per $100,000 of value (derived) | $2,482 |
| Illustrative tax on a $400,000 home (derived rate) | $9,928 |
For context, the Illinois medians are $5,189 of tax on $250,500 of value, and the US medians are $2,969 on $303,400. *Derived figures are estimates from Census medians, not official rates.
Winnebago County at a glance
- Median tax rank in Illinois: #16 of 102 counties
- Median home value rank in Illinois: #31 of 102
- Population rank in Illinois: #7 of 102 (283,289 residents)
- Population density rank: #6 of 102 (552 people per square mile)
- Land area rank in Illinois: #51 of 102 (513 sq mi, 0.9% of the combined county land area)
- Median tax as a monthly figure: $321; per $1,000 of home value: $2.48
How Winnebago County compares
Set against its state, Winnebago County's median bill of $3,850 is about 26% lower than the Illinois median ($5,189). Against the country as a whole it is about 30% higher than the US median ($2,969). That places the county #16 of 102 Illinois counties ranked by median taxes paid.
Remember what drives the ranking: bills follow home values as much as rates. Winnebago County's median home, at $155,100, ranks #31 by value in Illinois, while its derived rate of 2.48% compares with a derived US figure of 0.98%.
Some extra context for Winnebago County: the median bill works out to about $321 a month, and the derived rate equals roughly $2,482 of tax per $100,000 of home value. The county is home to 283,289 people — the #7 most populous county in Illinois, spread over 513 square miles, a density of about 552 people per square mile. Its median home value, $155,100, ranks #31 among the state's 102 counties with data.
Zooming out: of 3133 counties nationwide with published Census figures, only 244 record a higher median tax bill than Winnebago County — it sits in the top 8% nationally. The county holds roughly 2.2% of Illinois's people. Its homes are worth less than the state norm (median $155,100 versus $250,500), and a decade at the derived rate of 2.48% adds up to about 24.82% of the median home's value in tax. The cheapest county in the state, Pulaski County, medians $668 — $3,182 less than Winnebago County per year.
Counties nearest Winnebago County in the Illinois ranking
| County | Median tax paid | Median home value | Derived rate* |
|---|---|---|---|
| Woodford County, IL | $4,224 | $193,800 | 2.18% |
| Kankakee County, IL | $4,125 | $185,700 | 2.22% |
| Ogle County, IL | $3,737 | $184,100 | 2.03% |
| St. Clair County, IL | $3,533 | $168,800 | 2.09% |
How the tax is worked out
The bill is built in stages. First the assessor puts a market value on the property. Exemptions — a homestead exemption above all — then reduce the taxable amount. Finally the combined local rate is applied. To see the scale: at the county's derived rate of 2.48%, each $100,000 of value corresponds to about $2,482 of tax a year, and a $400,000 home to roughly $9,928. Real bills use the official assessment and district rates, not this derived figure, so treat the example as a sense of scale only.
Checking your assessment in Winnebago County
Believe your assessment is too high? The practical order of attack is: obtain your record card and audit it line by line; collect comparable recent sales in Winnebago County; ask the assessor's office to correct anything plainly wrong; and, if the value still seems off, lodge a formal appeal ahead of the deadline printed on your assessment notice. Windows are short — often 30 to 90 days — and late appeals are usually rejected outright, however strong the case.
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Frequently asked questions
What is the median property tax in Winnebago County, Illinois?
The median real estate tax paid in Winnebago County, Illinois is $3,850 per year, on a median home value of $155,100 (US Census Bureau, American Community Survey (ACS) 5-year estimates, 2023).
What is the effective property tax rate in Winnebago County, Illinois?
The derived effective rate is 2.48% — the median bill ($3,850) expressed as a share of the median home value ($155,100). No authority sets a rate this way; it exists to make counties with different home prices comparable.
How does Winnebago County compare with the rest of Illinois?
Winnebago County ranks #16 of 102 Illinois counties with published data by median taxes paid. Its median bill of $3,850 is about 26% lower than the Illinois median of $5,189.
How are property taxes calculated in Winnebago County, Illinois?
The assessor estimates your property's market value; exemptions (such as a homestead exemption) reduce the taxable amount; and the result is multiplied by the combined rates of the local taxing districts — county, municipality, school district and any special districts. In Winnebago County, the median outcome of that process is a bill of $3,850 on a median home value of $155,100.
Can I appeal my property tax assessment in Winnebago County, Illinois?
Yes — appeals are handled locally. Start with the Winnebago County assessor's property record card for your home, correct any factual errors, and back your case with comparable recent sales. Formal appeals go to the review board named on your assessment notice and must be filed by its deadline, typically within 30 to 90 days.