[Illinois Assessors]

Boone County, Illinois - Assessor's Office

The Boone County Assessor is responsible for appraising real estate and assessing a property tax on properties located in Boone County, Illinois. You can contact the Boone County Assessor for:

  • Appealing your property tax appraisal
  • Information on your property's tax assessment
  • Your property tax bill
  • Reporting upgrades or improvements
  • Checking the Boone County property tax due date
  • Paying your property tax

1212 Logan AvenueThe Boone County Assessor's Office is located in Belvidere, Illinois. Belvidere is the county seat of Boone County, where most local government offices are located. The assessor's office is located in the same building as the Courthouse, at 1208 Logan Avenue.

Boone County Assessor Contact Information

Additional Boone County Information

Boone County Assessor's Office Services

There are three major roles involved in administering property taxes - Tax Assessor, Property Appraiser, and Tax Collector. Note that in some counties, one or more of these roles may be held by the same individual or office. For example, the Boone County Tax Assessor may also serve as the Boone County Tax Appraiser.

  1. The Boone County Tax Assessor is responsible for setting property tax rates and collecting owed property tax on real estate located in Boone County.
  2. The Boone County Property Appraiser is responsible for determining the taxable value of each piece of real estate, which the Tax Assessor will use to determine the owed property tax.
  3. The Boone County Tax Collector is responsible for collecting property tax from property owners. They issue yearly tax bills to all property owners in Boone County, and work with the sheriff's office to foreclose on properties with delinquent taxes.

When contacting Boone County about your property taxes, make sure that you are contacting the correct office. You can call the Boone County Tax Assessor's Office for assistance at 815-544-2958. Remember to have your property's Tax ID Number or Parcel Number available when you call!

If you have documents to send, you can fax them to the Boone County assessor's office at 815-544-3365. Please call the assessor's office in Belvidere before you send documents or if you need to schedule a meeting. If you have general questions, you can call the Courthouse at 815-547-4770.

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Find property records for Boone County

The median property tax in Boone County, Illinois is $3,453.00

illinois Property Tax Data All of the Boone County information on this page has been verified and checked for accuracy.
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