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Welcome to Rancho Cucamonga ...

The city of Rancho Cucamonga is located in San Bernardino County<1>.

From the  Census Estimates for 2019, Rancho Cucamonga has a population of 178,556 people<2> (see below for details).

Rancho Cucamonga is 1,340 feet [408 m] above sea level.<3>.

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

Area Codes for Rancho Cucamonga: 909 & 840<4>

The ZIP codes for Rancho Cucamonga: 91701, 91729-91730, 91737, 91739<5>

Population Details ...

Taken from the 2019 Census Estimates, Rancho Cucamonga had an population of 178,556 people. This is an increase of 8.04% since the 2010 Census (or an increase of 39.78% since the 2000 Census).

At the time of the 2010 Census, Rancho Cucamonga had a population of 165,269 people (or 8.1% of the total population of San Bernardino County). This makes Rancho Cucamonga the county's 3rd most populous community.

The population of Rancho Cucamonga represents 0.44% of the population of California (which has 37,253,956 people), making it the state's 28th most populous community.

With a 2010 count of 165,269 people, the population of Rancho Cucamonga increased 29.38% from the 2000 Census (with a count of 127,743 people).

More information can be found on the Census Page for Rancho Cucamonga.

Websites for Rancho Cucamonga ...

Official Website:   www.ci.rancho-cucamonga.ca.us/

Chamber of Commerce:   www.ranchochamber.org/

Communities near Rancho Cucamonga ...

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

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

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

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

TripAdvisor Tourism Pages for Rancho Cucamonga ...

Looking for more information about Rancho Cucamonga? 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 Rancho Cucamonga, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for Rancho Cucamonga.

Adding Rancho Cucamonga to Our Gazetteer ...

We originally found mention of Rancho Cucamonga 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 Rancho Cucamonga was in the book titled SPV's Comprehensive Railroad Atlas of North America - California & Nevada.

For more details, see References and Mentions for Rancho Cucamonga.

The official website for Rancho Cucamonga: www.ci.rancho-cucamonga.ca.us/

The official website for San Bernardino County: www.sbcounty.gov/

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 San Bernardino, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>Population counts have been provided by the U.S. Census Bureau. For more detail, please visit our Census Page for Rancho Cucamonga.
<3>The elevation is an estimate for the area around Rancho Cucamonga - it will be higher in some places and lower in others.
<4>When there's a risk of an area code running out of phone numbers, an 'Overlay Area Code' is created that has the same geographic boundaries as the existing area code. In this case, the 909 code has been Overlayed with the 840 area code. New phone numbers in the Rancho Cucamonga area will be assigned with one of these codes: 909 or 840. As a result, placing a call in the Rancho Cucamonga area will require 10-digit dialing (where you enter both the area code and then the phone number).
<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 Rancho Cucamonga). When looking for a ZIP Code, whether Rancho Cucamonga or elsewhere, it's always best to check the website of the United States Postal Service (USPS).

Our list of ZIP Codes for Rancho Cucamonga includes: 91701, 91729, 91737 & 91739.
<6>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.




 

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This page was last modified/updated: 28 Apr 2025