Illinois Property Tax Assessors

DuPage County, Illinois Tax Assessors' Office

DuPage County Assessors Phone Number
DuPage County Supervisor of Assessments
421 North County Farm Road
Jack T. Knuepfer Admin. Bldg.
Wheaton, Illinois 60187
DuPage County Assessors Fax Number 630-407-5860 (Fax)

Where is the DuPage County Tax Assessor's Office?

The DuPage County Tax Assessor Office is located in the Jack T. Knuepfer Admin. Bldg. building in Wheaton, Illinois.

What can the DuPage County Assessor's Office do for me?

The DuPage County Tax Assessor's Office oversees the appraisal and assessment of properties as well as the billing and collection of property taxes for all taxable real estate located in DuPage County.

Contact the assessor's office if you need help with paying your property taxes, applying for a homestead exemption or other tax exemption, reporting upgrades to your home, appealing your property tax assessment, or verifying your property records.

Submitting a DuPage County property tax appeal

If you believe that your house has been unfairly overappraised (i.e. appraised at a value higher than the true market value of the property), you can attempt to get your home re-appraised at a lower value by contacting the Assessor's Office to submit a property tax appeal.

You will have to submit a form describing your property and sufficient proof that it is overassessed, including valuations of similar homes nearby as evidence. If your appeal is accepted, your home assessment (and property taxes) will be lowered as a result.

If you would like to appeal your property, call the DuPage County Assessor's Office at (630) 407 5858 and ask for a property tax appeal form. Keep in mind that property tax appeals are generally only accepted in a 1-3 month window each year.

For more information and example appeals, see how to appeal your property taxes.

Useful DuPage County Facts:

The median home value in DuPage County is between $314,810.00 and $318,990.00. Property tax rates are based on property values.

How can I contact DuPage County?

You can try contacting the DuPage County local government directly with any issues the Assessor's Office can't solve. In many counties, certain property records such as deeds are kept in the county courthouse or county archives instead of at the tax assessors' office.

The county seat for DuPage County is located in the County Administration Building in Wheaton, which is where the DuPage County Assessors' Office is also located. You can direct your general inquiries to DuPage County with the contact info listed below.

DuPage County Phone Number


DuPage County County Administration Building Address

County Administration Building
421 N County Farm Rd
Wheaton, IL 60187-3978

Useful DuPage County Links:

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