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Data Last Updated: April 1, 2023

ZIP Codes for City of Rio Oso, CA

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Counties:SUTTER, CA
Area Code(s):530, 916, 279
Timezone(s):Pacific (GMT -08:00)
City Population:356 (More Details)
CBSA:Yuba City, CA
Congressional District(s):01
Land Area:602 square miles (county)
Water Area:6 square miles (county)

1 ZIP Code

Rio Oso, CA ZIP Code Boundaries

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Rio Oso, CA Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases

Rio Oso, CA Demographic Information *

Total population**356
Male population181
Female population175
Median age (years)42.2
White Population274
Black Population5
Indian Population7
Asian Population26
Hawaiian Population1
Hispanic Population53
Median age (Male)40.9
Median age (Female)42.7
Total households124
Family households (families)94
Average household size2.87
Average family size3.28
Total housing units140
* Demographic data is based on 2010 Census for the City of RIO OSO.
** City and ZIP Code Population will not be equal due to differences in their geographies.


  1. U.S. Postal Service [Last Updated: 2/1/2023],
  2. Internal Data Creation [Last Updated: 2/1/2023],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],