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About Rio Oso, California

Rio Oso is a census-designated place (CDP) in Sutter County, California. Rio Oso sits at an elevation of 52 feet (16 m). The ZIP Code is 95674. The community is inside area code 530. The 2010 United States census reported Rio Oso's population was 356.

News from Rio Oso

Rio Oso Facts

  • Population Total: 356
  • Square Miles: 6.533
  • Area Code: area code 530
  • Elevation: 52
  • Postal Codes: 95674
  • Timezone: Pacific