Mason County, Illinois Tax Assessors' Office

Where is the Mason County Tax Assessor's Office?

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

The Mason 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 Mason 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 Mason 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 Mason County Assessor's Office at (309) 543 4775 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.

How can I contact Mason County?

You can try contacting the Mason 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 Mason County is located in the County Courthouse in Havana, which is located at PO BOX 77. You can direct your general inquiries to Mason County with the contact info listed below.

Mason County Phone Number

309-543-6661

Mason County Fax Number

309-543-2085

Mason County County Courthouse Address

County Courthouse
PO BOX 77
Havana, IL 62644-0077

Useful Mason County Links:

• Mason County Government Homepage
• Mason County Assessors' Office Homepage
• Mason County View by year including current and prior years
• Mason County Search by parcel number or owner name