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Welcome to Petaluma ...

Petaluma is located in Sonoma County<1>.

While we don't have a date for the founding of Petaluma, you might consider that their post office opened  in 1852.

The was incorporated April 12, 1858.

From the  Census Estimates for 2019, Petaluma has a population of 60,881 people<2> (see below for details).

Petaluma is near sea level<3>.

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

Area Codes for Petaluma: 707 & 369<4>

The ZIP codes for Petaluma: 94952-94955, 94975, 94999<5>

Population Details ...

Taken from the 2019 Census Estimates, Petaluma had an population of 60,881 people. This is an increase of 5.07% since the 2010 Census (or an increase of 11.61% since the 2000 Census).

At the time of the 2010 Census, Petaluma had a population of 57,941 people (or 11.95% of the total population of Sonoma County). This makes Petaluma the county's 2nd most populous community.

The population of Petaluma represents 0.16% of the population of California (which has 37,253,956 people), making it the state's 146th most populous community.

With a 2010 count of 57,941 people, the population of Petaluma increased 6.22% from the 2000 Census (with a count of 54,548 people).

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

Communities Also Named Petaluma ...

Using our Gazetteer, we found another community named Petaluma - it's located in Alabama.

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

Websites for Petaluma ...

Official Website: www.cityofpetaluma.net/

Communities near Petaluma ...

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

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

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

We also have a detailed list of newspapers that have been published in the area around Petaluma. Our list includes 31 papers. See our Newspapers Page for Petaluma.

TripAdvisor Tourism Pages for Petaluma ...

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

Adding Petaluma to Our Gazetteer ...

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

X2X - From that list, the Petaluma post office opened in 1852.

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

For more details, see References and Mentions for Petaluma.

The official website for Petaluma: www.cityofpetaluma.net/

The official website for Sonoma County: www.sonoma-county.org/

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 Sonoma, 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 Petaluma.
<3>The elevation is an estimate for the area around Petaluma - 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 Petaluma area will be assigned with one of these codes: 707 or 369. As a result, placing a call in the Petaluma 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 community (such as Petaluma). When looking for a ZIP Code, whether Petaluma or elsewhere, it's always best to check the website of the United States Postal Service (USPS).

Our list of ZIP Codes for Petaluma includes: 94952, 94953, 94954, 94975 & 94999.
<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: 12 Jul 2025