Mercer County, Illinois Tax Assessors' Office
100 SE 3rd Street
Mercer County Courthouse
Aledo, Illinois 61231
Where is the Mercer County Tax Assessor's Office?
What can the Mercer County Assessor's Office do for me?
The Mercer 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 Mercer 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 Mercer 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 Mercer County Assessor's Office at (309) 582 7814 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 Mercer County Facts:
The median home value in Mercer County is between $98,109.00 and $107,491.00. Property tax rates are based on property values.
How can I contact Mercer County?
You can try contacting the Mercer 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 Mercer County is located in the County Courthouse in Aledo, which is where the Mercer County Assessors' Office is also located. You can direct your general inquiries to Mercer County with the contact info listed below.
Mercer County Phone Number
Mercer County County Courthouse Address
100 SE 3rd St
Aledo, IL 61231-1948