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About Onida, South Dakota

Onida is a city in Sully County, South Dakota, United States. The population was 658 as of the 2010 census. It is the county seat of Sully County.

News from Onida

Onida Facts

  • Population Total: 658
  • Square Miles: 0.6
  • Area Code: 605
  • Elevation: 1873
  • Postal Codes: 57564
  • Timezone: North American Central