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Welcome to Saint Helena ...

The city of Saint Helena is located in Napa County<1>.

While we don't have a date for the founding of Saint Helena, you might consider that their post office opened  in 1856.

The city was incorporated March 24, 1876.

A typical abbreviation for Saint Helena: St. Helena

From the  Census Estimates for 2019, Saint Helena has a population of 6,034 people<2> (see below for details).

Saint Helena is 240 feet [73 m] above sea level.<3>.

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

Area Codes for Saint Helena: 707 & 369<4>

The ZIP code for Saint Helena: 94574<5>

Population Details ...

Taken from the 2019 Census Estimates, Saint Helena had an population of 6,034 people. This is an increase of 3.78% since the 2010 Census (or an increase of 1.41% since the 2000 Census).

At the time of the 2010 Census, Saint Helena had a population of 5,814 people. This makes Saint Helena the county's 3rd most populous community.

The population of Saint Helena represents 0.02% of the population of California (which has 37,253,956 people), making it the state's 414th most populous community.

With a 2010 count of 5,814 people, the population of Saint Helena decreased 2.29% from the 2000 Census (with a count of 5,950 people).

More information can be found on the Census Page for Saint Helena.

Communities Also Named Saint Helena ...

Using our Gazetteer, we found that there are 5 communities that are also named Saint Helena - they are located in Maryland, Nebraska, North Carolina, South Carolina and Virginia.

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

Websites for Saint Helena ...

Official Website: www.city.ci.st-helena.ca.us/

Communities near Saint Helena ...

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

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

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

We also have a detailed list of newspapers that have been published in the area around Saint Helena. Our list includes 5 papers. See our Newspapers Page for Saint Helena.

TripAdvisor Tourism Pages for Saint Helena ...

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

Adding Saint Helena to Our Gazetteer ...

We originally found mention of Saint Helena 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 Saint Helena was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<7>

X2X - From that list, the Saint Helena post office opened in 1856.

We also found Saint Helena in the book titled List of Post Offices in the United States (1870).

For more details, see References and Mentions for Saint Helena.

The official website for Saint Helena: www.city.ci.st-helena.ca.us/

The official website for Napa County: www.co.napa.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 Napa, 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 Saint Helena.
<3>The elevation is an estimate for the area around Saint Helena - 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 707 code has been Overlayed with the 369 area code. New phone numbers in the Saint Helena area will be assigned with one of these codes: 707 or 369. As a result, placing a call in the Saint Helena 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 Saint Helena). When looking for a ZIP Code, whether Saint Helena 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>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: 28 Apr 2025