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Knox County, Ohio - Assessor's Office

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

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

117 E High St Rm 161The Knox County Assessor's Office is located in Mt. Vernon, Ohio. The assessor's office is located in the same building as the Knox County Courthouse, at 117 East High Street, Suite 120.

Knox County Assessor Contact Information

Additional Knox County Information

Knox 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 Knox County Tax Assessor may also serve as the Knox County Tax Appraiser.

  1. The Knox County Tax Assessor is responsible for setting property tax rates and collecting owed property tax on real estate located in Knox County.
  2. The Knox 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 Knox County Tax Collector is responsible for collecting property tax from property owners. They issue yearly tax bills to all property owners in Knox County, and work with the sheriff's office to foreclose on properties with delinquent taxes.

When contacting Knox County about your property taxes, make sure that you are contacting the correct office. You can call the Knox County Tax Assessor's Office for assistance at 740-393-6750. 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 Knox County assessor's office at 740-393-6806. Please call the assessor's office in Mt. Vernon before you send documents or if you need to schedule a meeting. If you have general questions, you can call the Knox County Courthouse at 740-393-6703-614.


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The median property tax in Knox County, Ohio is $1,487.00


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