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Department of Equalization | Sully County

700 Ash Avenue, Onida, SD 57564

Eligibility
Open to all
Hours
7:30am - 4:30pm (CT), Monday - Friday
Application process
Call for information
Fees
Vary; call for information
Service area
Sully County, SD

Other Information

Age Group

  • Young Adults (18-24)
  • Adults (25-64)
  • Older Adults (65+)
  • Children (0-17)
Purpose is to locate, identify, and appraise all taxable property, in accordance with state laws and administrative procedures, while maintaining current information on the ownership and characteristics of property. Also, this office prepares and certifies the assessment roll and individual property assessments in accordance with state law.
Last Assured
10/06/2025
Providing organization
Sully County

Serving the citizens of Sully County.