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The Commemorative Quarter for California





Welcome to Riverside ...

The city of Riverside is located in Riverside County<1> and is the County Seat for Riverside County.

While we don't have a date for the founding of Riverside, you might consider that their post office opened  in 1871.

The city was incorporated October 11, 1883.

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 329,785 people<3> (see below for details).

Riverside is 880 feet [268 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: 951

The ZIP codes for Riverside: 92501-92509, 92513-92519, 92521-92522<5>

Population Details ...

Taken from the 2019 Census Estimates, Riverside had an population of 329,785 people. This is an increase of 8.53% since the 2010 Census (or an increase of 29.24% since the 2000 Census).

At the time of the 2010 Census, Riverside had a population of 303,871 people (which is 13.8% of the total population of Riverside County). This makes Riverside the county's most populous community.

The population of Riverside represents 0.82% of the total population of California (which has 37,253,956 people), making it the state's 12th most populous community.

With a 2010 count of 303,871 people, the population of Riverside increased 19.09% from the 2000 Census (with a count of 255,166 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 Riverside County, we know of another 5 California communities named Riverside. Those communities are located in the following counties: Humboldt, Orange, Sacramento, San Bernardino and Stanislaus County.

Beyond California, there are 195 communities that are also named Riverside - they are located in Alabama (4), Arizona, Arkansas (4), British Columbia, 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), Washington (6), West Virginia (7), Wisconsin (3) and Wyoming (2).

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

Websites for Riverside ...

Official Website:   www.riversideca.gov/

Chamber of Commerce:   www.riverside-chamber.com/

Junior League:   www.juniorleagueofriverside.com/

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. Our list includes 58 papers. 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.

In addition to the Tourism page for Riverside, there are neighboring communities that also have Tourism pages. More information about those communities can be found on 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.<7>

X2X - From that list, the Riverside post office opened in 1871.

We also found Riverside in the book titled Business Atlas and Shippers' Guide (1895).

For more details, see References and Mentions for Riverside.

The official website for Riverside: www.riversideca.gov/

The official website for Riverside County: www.co.riverside.ca.us/

The official website for State of California: https://www.ca.gov/

Footnotes ...

<1>If you're interested in how the shape of California's counties, including Riverside, 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 city'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 city (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).

Our list of ZIP Codes for Riverside includes: 92501, 92502, 92503, 92504, 92505, 92506, 92507, 92508, 92513, 92514, 92515, 92516, 92517, 92518, 92521 & 92522.
<6>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.
<7>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: 21 Apr 2025