Sully County Equalization Department in Sully County, South Dakota

When visiting the county assessor's office, bring your property's parcel number or street address to quickly locate your assessment record, and bring supporting documentation if you are disputing a valuation. Sully County Equalization Department is located at PO Box 265, Onida, SD. Many assessor offices also maintain online portals where you can review your assessed value and exemption status before visiting in person.

About Sully County Equalization Department

The Sully County Equalization Department, located in Onida, South Dakota, determines the value of all taxable property in Sully County, SD. Taxable property includes land and commercial properties, often referred to as real property or real estate, and fixed assets owned by businesses, often referred to as personal property. Property assessments performed by the Assessor are used to determine the Sully County property taxes owed by individual taxpayers.

• Property assessment values and annual reassessment notices for parcels in Sully County Equalization Department's jurisdiction
• Homestead, senior citizen, veteran, and disability exemption applications
• Formal assessment appeals and informal review requests
• GIS parcel maps, property boundary data, and ownership record corrections