Welcome to Rio Oso ...

Rio Oso is located in Sutter County<1>.

While we don't have a date for the founding of Rio Oso, you might consider that their post office opened in 1870.

Rio Oso is 40 feet [12 m] above sea level.<2>.

Time Zone: Rio Oso lies in the Pacific Time Zone (PST/PDT) and observes daylight saving time

Area Code for Rio Oso: 530

The ZIP code for Rio Oso: 95674<3>

Communities near Rio Oso ...

We have created a list of 10 communities that are near Rio Oso.

Yuba City
(13 miles [20.9 km] to the north)
- Jump to our Gazetteer entry for Yuba City
- Yuba City is located in Sutter County
- Population from the 2020 Census: 66,444 people
- Jump to TripAdvisor's Tourism page for Yuba City <4>
- Google driving directions:
- From your current location to Yuba City
- From Rio Oso to Yuba City
Lincoln
(13 miles [20.9 km] to the east)
- Jump to our Gazetteer entry for Lincoln
- Lincoln is located in Placer County
- Population from the 2020 Census: 48,996 people
- Jump to TripAdvisor's Tourism page for Lincoln <4>
- Google driving directions:
- From your current location to Lincoln
- From Rio Oso to Lincoln
Marysville
(13 miles [20.9 km] to the north)
- Jump to our Gazetteer entry for Marysville
- Marysville is located in Yuba County
- Population from the 2020 Census: 12,594 people
- Jump to TripAdvisor's Tourism page for Marysville <4>
- Google driving directions:
- From your current location to Marysville
- From Rio Oso to Marysville
Wheatland
(7 miles [11.3 km] to the northeast)
- Jump to our Gazetteer entry for Wheatland
- Wheatland is located in Yuba County
- Population from the 2020 Census: 3,666 people
- Jump to TripAdvisor's Tourism page for Wheatland <4>
- Google driving directions:
- From your current location to Wheatland
- From Rio Oso to Wheatland
Marcuse ‑ Historic
(4 miles [6.4 km] to the west)
- Note: We haven't been able to verify our GPS coordinates for Marcuse. Although the coordinates have been estimated, they should be in the vicinity.<5>
- Jump to our Gazetteer entry for Marcuse
- Marcuse is located in Sutter County
- Google driving directions:
- From your current location to Marcuse
- From Rio Oso to Marcuse
Nicolas
(4 miles [6.4 km] to the southwest)
- Jump to our Gazetteer entry for Nicolas
- Nicolas is located in Sutter County
- Jump to TripAdvisor's Tourism page for Nicolas <4>
- Google driving directions:
- From your current location to Nicolas
- From Rio Oso to Nicolas
Nicolaus
(4 miles [6.4 km] to the southwest)
- Jump to our Gazetteer entry for Nicolaus
- Nicolaus is located in Sutter County
- Jump to TripAdvisor's Tourism page for Nicolaus <4>
- Google driving directions:
- From your current location to Nicolaus
- From Rio Oso to Nicolaus
Ostrom ‑ Historic
(7 miles [11.3 km] to the north)
- Jump to our Gazetteer entry for Ostrom
- Ostrom is located in Yuba County
- Google driving directions:
- From your current location to Ostrom
- From Rio Oso to Ostrom
Olivehurst
(9 miles [14.5 km] to the north)
- Jump to our Gazetteer entry for Olivehurst
- Olivehurst is located in Yuba County
- Jump to TripAdvisor's Tourism page for Olivehurst <4>
- Google driving directions:
- From your current location to Olivehurst
- From Rio Oso to Olivehurst
Pleasant Grove
(9 miles [14.5 km] to the south)
- Jump to our Gazetteer entry for Pleasant Grove
- Pleasant Grove is located in Sutter County
- Jump to TripAdvisor's Tourism page for Pleasant Grove <4>
- Google driving directions:
- From your current location to Pleasant Grove
- From Rio Oso to Pleasant Grove

To Help With Your Genealogy Research ...

We have a couple of sections for those tracing their genealogy.

We created a list of cemeteries that are in the area around Rio Oso. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Rio Oso.

Using the information from an 1895 Atlas, we've created a list of communities that were in the area of Rio Oso. Our list includes information such as whether the 1895 community had a post office or railroad service. See our List of 1890's Communities around Rio Oso.

We also have a detailed list of newspapers that have been published in the area around Rio Oso. See our Newspapers Page for Rio Oso.

TripAdvisor Tourism Pages for Rio Oso ...

Looking for more information about Rio Oso? A wonderful source is the TripAdvisor website. We always start with the TripAdvisor Tourism page, where you can read an overview with links that will help you find lodging, restaurants and attractions.

In addition to the Tourism page for Rio Oso, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for Rio Oso.

Adding Rio Oso to Our Gazetteer ...

We originally found mention of Rio Oso in both the FIPS-55 and the GNIS. For more information, see the FIPS and GNIS Codes sections on our Miscellaneous Page.

From our notes, the earliest published mention we've found for Rio Oso was in the book titled List of Post Offices in the United States (1870).

We also found Rio Oso in the book titled SPV's Comprehensive Railroad Atlas of North America - California & Nevada.

For more details, see References and Mentions for Rio Oso.

Footnotes ...

<1>	If you're interested in how the shape of California's counties, including Sutter, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>	The elevation is an estimate for the area around Rio Oso - it will be higher in some places and lower in others.
<3>	ZIP Codes have been created by the United States Postal Service (USPS) as a way of grouping addresses to make delivery more efficient. The boundaries of the ZIP Code can be changed, re-assigned, eliminated or overlapped with other ZIP Codes. So keep in mind that any given ZIP Code is only 'loosely' associated with a community (such as Rio Oso). When looking for a ZIP Code, whether Rio Oso or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<4>	While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.
<5>	An 'estimated' location is one where we have been given GPS coordinates, but are unable to verify the accuracy of those coordinates. That said, we have some confidence that we have placed the marker near the actual location. A typical reason for being unable to verify a location is that it might be on private property or maybe historic and gone without an obvious trace.