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Rio Oso, CA
Census-designated place in Sutter County, California. ZIP codes: 95674.
Population
437
Land area
6.5sq mi
People per sq mi
67
ZIP codes
1
Rio Oso and its ZIP codes
Rio Oso at a glance
- Rio Oso is 73% less dense than California as a whole.
Local data for Rio Oso, CA
Counts from official public data
Economy and federal money
Jobs, pay, income and spending are for Sutter County. PPP loans are for Rio Oso.
Unemployment rate
7.1%
Sep 2026, -0.2 pts in a year
Average annual pay
$57,092
33,016 jobs, 2025
Income per person
$57,844
BEA, 2024
Federal spending
$572M
FY 2026, $5,741 per person
Environment and hazard risk
Rio Oso, CA, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Moderate
Top: drought
Storm events since 1996
33
Countywide, mostly flood
Flood insurance policies
3,166
11.5% of homes, county
July high / Jan low
96° / 38°F
20.1 inches of rain a year
Health statistics
Share of adults in Rio Oso, CA, CDC PLACES estimates
Obesity
30.0%
U.S. 33.3% -3.3 pts
Diabetes
11.9%
U.S. 12.1% about the same
Smoking
13.5%
U.S. 12.8% +0.7 pts
Uninsured (18-64)
7.5%
U.S. 11.1% -3.6 pts
ZIP codes in Rio Oso
1 in or overlapping Rio Oso. Population shown
Cities near Rio Oso
| Name | Distance | Land area (sq mi) |
|---|---|---|
| TrowbridgeCensus-designated place | 2.2 mi | 6.8 |
| Plumas LakeCensus-designated place | 2.4 mi | 11.8 |
| East NicolausCensus-designated place | 3.1 mi | 4.6 |
| NicolausCensus-designated place | 4.1 mi | 3.1 |
| OlivehurstCensus-designated place | 9.1 mi | 8.4 |
| SheridanCensus-designated place | 9.6 mi | 25.5 |
| WheatlandCity | 9.7 mi | 8.1 |
| RobbinsCensus-designated place | 11 mi | 2.6 |
| LindaCensus-designated place | 12 mi | 8.6 |
| Yuba CityCity | 14 mi | 16.6 |
| LincolnCity | 14 mi | 24.5 |
| Beale AFBCensus-designated place | 14 mi | 10.1 |
| MarysvilleCity | 14 mi | 3.5 |
| Knights LandingCensus-designated place | 15 mi | 0.5 |
| ElvertaCensus-designated place | 17 mi | 8.8 |
| RocklinCity | 17 mi | 19.8 |
Frequently asked questions
- What county is Rio Oso, CA in?
- Rio Oso is in Sutter County, California.
- What ZIP codes are in Rio Oso, CA?
- ZIP codes in or overlapping Rio Oso include 95674.
- What is the population of Rio Oso, CA?
- About 437 people live in Rio Oso, based on American Community Survey 5-year estimates.
- What cities are near Rio Oso?
- Nearby places include Trowbridge (2.2 mi), Plumas Lake (2.4 mi), East Nicolaus (3.1 mi), Nicolaus (4.1 mi), Olivehurst (9.1 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023