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Welcome to Riverside ...

The town of Riverside is located in Okanogan County<1>.

While we don't have a date for the founding of Riverside, you might consider that their post office opened  in 1900.

When the people of Riverside refer to themselves (known as a demonym), they frequently use Riversider<2>

From the  Census Estimates for 2019, Riverside has a population of 275 people<3> (see below for details).

Riverside is 870 feet [265 m] above sea level.<4>.

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

Area Code for Riverside: 509

The ZIP code for Riverside: 98849<5>

Population Details ...

Taken from the 2019 Census Estimates, Riverside had an population of 275 people. This is a decrease of 1.79% since the 2010 Census (or a decrease of 20.98% since the 2000 Census).

At the time of the 2010 Census, Riverside had a population of 280 people. This makes Riverside the county's 9th most populous community.

With a 2010 count of 280 people, the population of Riverside decreased 19.54% from the 2000 Census (which had a count of 348 people).

More information can be found on the Census Page for Riverside.

Communities Also Named Riverside ...

While we believe that this Riverside is located in Okanogan County, we know of another 5 Washington communities named Riverside. Those communities are located in the following counties: Pacific, Snohomish, Spokane, Walla Walla and Whitman County.

Beyond Washington, there are 195 communities that are also named Riverside - they are located in Alabama (4), Arizona, Arkansas (4), British Columbia, California (6), Colorado (3), Connecticut (3), Delaware, Florida (6), Georgia (9), Idaho (4), Illinois, Indiana (5), Iowa (2), Kansas (5), Kentucky (3), Maine, Manitoba, Maryland (4), Massachusetts (6), Michigan (3), Minnesota (3), Mississippi (2), Missouri (5), Montana (6), Nebraska (3), Nevada (2), New Brunswick, New Hampshire (2), New Jersey (6), New Mexico (5), New York (7), North Carolina (5), North Dakota, Nova Scotia (4), Ohio (3), Oklahoma, Ontario (7), Oregon (4), Pennsylvania (5), Rhode Island, South Carolina (4), South Dakota (2), Tennessee (9), Texas (3), Utah (4), Vermont (3), Virginia (7), West Virginia (7), Wisconsin (3) and Wyoming (2).

For more information, see our Tidbits & Trivia Page for Riverside.

Communities near Riverside ...

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

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 Riverside. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Riverside.

Using the information from an 1895 Atlas, we've created a list of communities that were in the area of Riverside. 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 Riverside.

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

TripAdvisor Tourism Pages for Riverside ...

Looking for more information about Riverside? 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.

While we are unaware of a Tourism page that is specific to Riverside, there are neighboring communities that do have Tourism pages. A map of those communities can be found with our TripAdvisor Page for Riverside.

Adding Riverside to Our Gazetteer ...

We originally found mention of Riverside 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 Riverside was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<9>

X2X - From that list, the Riverside post office opened in 1900.

For more details, see References and Mentions for Riverside.

Unfortunately, we don't know of a website for Riverside. If you can help, please contact us through our Feedback Page.

The official website for Okanogan County: www.okanogancounty.org/

The official website for State of Washington: https://wa.gov/

Footnotes ...

<1>If you're interested in how the shape of Washington's counties, including Okanogan, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>A demonym is the name for a resident of a community which is usually derived from (or is related to) the name of that community. In other words, it's how the residents of Riverside refer to themselves. It's important to note that there aren't any rules for taking a town's name and turning it into a demonym. A demonym is informal and while the majority of Riverside may use one name, keep in mind that others may use something different.
<3>Population counts have been provided by the U.S. Census Bureau. For more detail, please visit our Census Page for Riverside.
<4>The elevation is an estimate for the area around Riverside - it will be higher in some places and lower in others.
<5>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 town (such as Riverside). When looking for a ZIP Code, whether Riverside or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<6>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.
<7>The location has been supplied by the Geographic Names Information System - which is maintained by the U.S. Geological Survey (USGS). While these values should be definitive, we found that accuracy can vary and you should double-check the location if accuracy is required.
<8>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.
<9>A copy of their list with background information can be found at:

      https://cblevins.github.io/us-post-offices/data-biography/




 

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This page was last modified/updated: 29 Apr 2025