Illinois Property Tax Assessors

McHenry County, Illinois Tax Assessors' Office

McHenry County Assessors Phone Number
McHenry County Assessment Officer
2200 North Seminary Avenue
Woodstock, Illinois 60098
McHenry County Assessors Fax Number 815-338-8522 (Fax)

Where is the McHenry County Tax Assessor's Office?

The McHenry County Tax Assessor Office is located at 2200 North Seminary Avenue, at the County Government Center building in Woodstock, Illinois.

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

The McHenry 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 McHenry 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 McHenry 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 McHenry County Assessor's Office at (815) 334 4290 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 McHenry County Facts:

The median home value in McHenry County is between $247,139.00 and $252,261.00. Property tax rates are based on property values.

How can I contact McHenry County?

You can try contacting the McHenry 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 McHenry County is located in the County Government Center in Woodstock, which is where the McHenry County Assessors' Office is also located. You can direct your general inquiries to McHenry County with the contact info listed below.

McHenry County Phone Number


McHenry County Fax Number


McHenry County County Government Center Address

County Government Center
2200 N Seminary Ave
Woodstock, IL 60098-2637