Jefferson County, Illinois - Assessor's Office
The Jefferson County Assessor is responsible for appraising real estate and assessing a property tax on properties located in Jefferson County, Illinois. You can contact the Jefferson County Assessor for:
- Appealing your property tax appraisal
- Your property tax bill
- Checking the Jefferson County property tax due date
- Reporting upgrades or improvements
- Information on your property's tax assessment
- Paying your property tax
100 S 10Th StThe Jefferson County Assessor's Office is located in Mt. Vernon, Illinois. The assessor's office is located in the same building as the Jefferson County Courthouse, at 100 South 10th Street.
Jefferson County Assessor Contact Information
Additional Jefferson County Information
Jefferson 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 Jefferson County Tax Assessor may also serve as the Jefferson County Tax Appraiser.
- The Jefferson County Tax Assessor is responsible for setting property tax rates and collecting owed property tax on real estate located in Jefferson County.
- The Jefferson 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.
- The Jefferson County Tax Collector is responsible for collecting property tax from property owners. They issue yearly tax bills to all property owners in Jefferson County, and work with the sheriff's office to foreclose on properties with delinquent taxes.
When contacting Jefferson County about your property taxes, make sure that you are contacting the correct office. You can call the Jefferson County Tax Assessor's Office for assistance at 618-244-8016. 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 Jefferson County assessor's office at 618-244-1499. 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 Jefferson County Courthouse at 618-244-8000.