Illinois Property Tax Assessors

Whiteside County, Illinois Tax Assessors' Office

Whiteside County Assessors Phone Number
Whiteside County Assessment Officer
200 East Knox Street
Morrison, Illinois 61270

Where is the Whiteside County Tax Assessor's Office?

The Whiteside County Tax Assessor Office is located at 200 East Knox Street, at the County Courthouse building in Morrison, Illinois.

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

The Whiteside 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 Whiteside 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 Whiteside 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 Whiteside County Assessor's Office at (815) 772 5195 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 Whiteside County Facts:

The median home value in Whiteside County is between $95,763.00 and $100,437.00. Property tax rates are based on property values.

How can I contact Whiteside County?

You can try contacting the Whiteside 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 Whiteside County is located in the County Courthouse in Morrison, which is where the Whiteside County Assessors' Office is also located. You can direct your general inquiries to Whiteside County with the contact info listed below.

Whiteside County Phone Number


Whiteside County Fax Number


Whiteside County County Courthouse Address

County Courthouse
200 E Knox St
Morrison, IL 61270-2809

Useful Whiteside County Links:

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