Property tax in DuPage County, Illinois
In DuPage County, the property tax bill comes from the DuPage County Treasurer. Every due date for the 2025 Taxes Payable 2026 bill has passed, and the county had not posted the next cycle's dates when we checked. You can look up and pay the bill on the county's own payment page. Taken from DuPage County's own pages, checked September 23, 2026.
The median property tax bill in DuPage County, Illinois is $8,007 a year, which is about 2.05% of the county's median home value of $391,400. That effective rate is higher than the typical Illinois county (1.81%) and higher than the national median (0.81%). These are American Community Survey 5-year estimates (2024); your own bill depends on your home's assessed value and any exemptions.
Who sends the property tax bill in DuPage County, and how do you pay it?
The bill comes from the DuPage County Treasurer. The value it is based on is set by a separate office, the DuPage County Supervisor of Assessments, with the township assessors, which is who to ask if the value looks wrong. For how to look up and pay the bill, go to the county's own payment information.
Township assessors value homes, and a Board of Review decision can be taken to the Illinois Property Tax Appeal Board within 30 days, or to court. The exemptions on the county's pages (general homestead, home improvement, senior, senior assessment freeze, veterans and disability, and the senior tax deferral) are the state's programs, applied for through the county. E-check payments online are free; credit cards carry a 2.10% processor fee (at least $3 in person), and PIN debit cards, which work only at the Treasurer's office in Wheaton, cost $3. Mail payments in the envelope that comes with the bill; late in the year, mail to the Treasurer's office in Wheaton instead, because the county's pages give different closing dates (September 30 and October 31) for the Carol Stream post office box. If your lender pays from escrow, check before paying yourself so the bill is not paid twice. The Treasurer also accepts prepayment of next year's taxes.
When are property taxes due in DuPage County?
Every due date for the 2025 Taxes Payable 2026 bill has passed, and DuPage County had not posted the next cycle's dates when we checked on September 23, 2026. If that bill is still unpaid, the late-payment rules below apply to it. Counties usually repeat the schedule, but confirm the new dates on your next bill. For the 2025 Taxes Payable 2026 bill, DuPage County splits the bill into 2 payments, the first due June 1, 2026 and the last September 1, 2026. Illinois law charges interest of 1.5% a month on late payments, starting June 2 on the first installment and September 2 on the second. Pay by October 2, 2026 to keep the property off the published list of delinquent taxes. The last day to pay online is Friday, October 30, 2026, and the county's tax calendar gives the same day as the last day for personal checks; its payment pages say checks are refused after Saturday, October 31, so do not count on the weekend. From November 2, only cash, cashier's checks or money orders are accepted, and unpaid bills pick up an extra $10 for publication and mailing. The last day to pay is Wednesday, November 18, 2026, by 4:30 p.m. at the Treasurer's office, and the tax sale for unpaid 2025 taxes begins November 19, 2026.
| Payment | Due | Note |
|---|---|---|
| First installment | June 1, 2026 (passed) | Bills for 2025 taxes were mailed on April 29, 2026. A mailed payment is judged by its U.S. Postal Service postmark, not a postage meter mark or the day it arrives. |
| Second installment | September 1, 2026 (passed) | Participating DuPage County banks took payments only through September 1, 2026; after that, pay the Treasurer directly. |
From DuPage County's published schedule, checked September 23, 2026. If a date falls on a weekend or holiday, the county's own rules on the next business day apply.
Estimate the property tax on a home in DuPage County
Enter a home's market value for a ballpark at DuPage County's average effective rate of 2.05% (Census). The real bill depends on the home's assessed value, the millage where it sits and any exemptions.
Estimated property tax: $8,024 / year
Property tax in DuPage County at a glance
| Measure | Value |
|---|---|
| Median annual property tax | $8,007 |
| Median home value | $391,400 |
| Effective tax rate | 2.05% |
| Typical Illinois county rate | 1.81% |
| National median county rate | 0.81% |
Effective rate = median real estate taxes paid divided by median home value. Source: U.S. Census Bureau, American Community Survey 5-year estimates.
How does DuPage County compare in Illinois?
Among Illinois's 102 counties, DuPage County has the 24th highest effective property-tax rate: 23 rank higher and 78 rank lower. That is on the higher side for Illinois. Nationally, it ranks 70th of 3135 US counties by effective rate. See every Illinois county ranked.
How much do homeowners in DuPage County actually pay?
The median is only the middle bill. Across DuPage County's 256,474 owner-occupied homes, 90.3% pay $3,000 or more a year in property tax, 94.1% pay at least $2,000, and 1.6% pay under $800. Another 1.3% report paying no property tax at all, which usually means an exemption covers the whole bill.
| Annual bill | Homes | Share |
|---|---|---|
| Under $800 | 4,135 | 1.6% |
| $800 to $1,499 | 4,062 | 1.6% |
| $1,500 to $1,999 | 3,473 | 1.4% |
| $2,000 to $2,999 | 9,856 | 3.8% |
| $3,000 or more | 231,710 | 90.3% |
| No property tax paid | 3,238 | 1.3% |
Owners with a mortgage pay a median of $8,170 and owners without one pay $7,688. That is within 10% either way, so in DuPage County paying off the house does not go with a noticeably different bill. Census table B25103.
How does the DuPage County property tax bill compare with local incomes?
The median property tax bill of $8,007 is about 6% of the median income of DuPage County homeowner households, $133,458 a year. That compares two middles, so a retiree in a long-held home can pay a far larger share. 73.1% of DuPage County's occupied homes are lived in by their owners; renters pay property tax too, just folded into rent.
Have property taxes gone up in DuPage County?
Yes. The median bill went from $6,783 in 2015-2019 to $8,007 in 2020-2024, a 18% rise. Over the same span the median home value moved 26.9%, from $308,500 to $391,400. Bills rose more slowly than values, which is what assessment caps and falling millage rates do: the county is taxing a smaller share of each home's worth.
Two Census ACS 5-year periods with no survey years in common, in each period's own dollars. A change counts only if it exceeds the combined 90% margin of error.
Property tax in counties next to DuPage County
DuPage County borders 4 counties.
| County | Effective rate | Median bill | Median home value |
|---|---|---|---|
| Kendall County, IL | 2.37% | $7,651 | $322,400 |
| Kane County, IL | 2.26% | $7,382 | $327,000 |
| Will County, IL | 2.24% | $7,173 | $319,600 |
| DuPage County, IL (this county) | 2.05% | $8,007 | $391,400 |
| Cook County, IL | 1.91% | $6,191 | $324,500 |
How is a home assessed in DuPage County?
Illinois assesses homes at 33.33% of market value in every county, DuPage County included. How Illinois assesses and reappraises homes.
Is there a homestead exemption in DuPage County?
Yes. Illinois's General Homestead Exemption is $6,000 of equalized assessed value in most counties, $8,000 in counties next to Cook, and $10,000 in Cook County. That is the Illinois rule, and it applies in DuPage County. Illinois's exemptions and relief programs in full.
DuPage County does not add relief programs of its own beyond the Illinois ones (checked September 23, 2026).
How to appeal your DuPage County property assessment
In DuPage County you appeal to the DuPage County Board of Review. The deadline: Within 30 days after your township's assessments are published. For 2026, the deadlines are September 28 for Wayne Township, October 5 for York, and October 13 for Addison and Naperville. Deadlines for Bloomingdale, Downers Grove, Lisle, Milton and Winfield had not been posted as of September 23, 2026. Starting in 2026, every appeal must be filed electronically. How to file. Checked September 23, 2026 against the official appeal rules.
How Illinois's appeal process works, including the next level if the first one turns you down.
Illinois rules from primary state sources, reviewed September 7, 2026; sources on the Illinois page.
Work out your own numbers
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How much house can I afford?
Your income, debts and down payment against the 28/36 rule lenders actually use, with DuPage County's tax rate to hand.
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Mortgage calculator
Monthly payment with principal, interest, tax and insurance, plus what an extra payment saves you.
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Illinois income tax
Brackets, standard deduction and what Illinois actually taxes.
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Sales tax in DuPage County
The other local tax: combined state and local rate for this county.
Sources
- Median real estate taxes paid and median home value for DuPage County, Illinois: U.S. Census Bureau, American Community Survey 5-year estimates (2020-2024), tables B25103, B25077, B25102, B25119 and B25003; the five-year comparison uses the 2015-2019 estimates. Neighboring counties: Census county adjacency file.