North Dakota Property Tax Assessors

Sioux County, North Dakota Tax Assessors' Office

Sioux County Assessors Phone Number
Sioux County Tax Equalization Office
302 2nd Avenue
Sioux County Courthouse
Fort Yates, North Dakota 58538

Where is the Sioux County Tax Assessor's Office?

The Sioux County Tax Assessor, Tax Equalization Director Office is located in the Sioux County Courthouse building in Fort Yates, North Dakota.

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

The Sioux 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 Sioux 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 Sioux 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 Sioux County Assessor's Office at (701) 854 3481 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 Sioux County Facts:

The median home value in Sioux County is between $63,792.00 and $79,808.00. Property tax rates are based on property values.

How can I contact Sioux County?

You can try contacting the Sioux 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 Sioux County is located in the County Courthouse in Fort Yates, which is where the Sioux County Assessors' Office is also located. You can direct your general inquiries to Sioux County with the contact info listed below.

Sioux County Phone Number


Sioux County Fax Number


Sioux County County Courthouse Address

County Courthouse
302 2nd Avenue
Fort Yates, ND 58538

Useful Sioux County Links:

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