Welcome to Diablo ...
Diablo is located in Contra Costa County<1>.
While we don't have a date for the founding of Diablo, you might consider that their post office opened in 1916.
Diablo is 520 feet [158 m] above sea level.<2>.
Time Zone: Diablo lies in the Pacific Time Zone (PST/PDT) and observes daylight saving time
Diablo lies within the (925) area code.
The ZIP code for Diablo: 94528<3>
Communities Also Named Diablo ...
Using our Gazetteer, we found another community named Diablo - it's located in Washington.
For more information, see our Tidbits & Trivia Page for Diablo.
Communities near Diablo ...
We have created a list of 10 communities that are near Diablo.
- Oakland
(17 miles [27.4 km] to the west)- Jump to our Gazetteer entry for Oakland
- Oakland is located in Alameda County
- Population from the 2020 Census: 424,891 people
- Jump to TripAdvisor's Tourism page for Oakland <4>
- Fremont
(19 miles [30.6 km] to the south)- Jump to our Gazetteer entry for Fremont
- Fremont is located in Alameda County
- Population from the 2020 Census: 234,569 people
- Former names for Fremont:
- Centerville
- Irvington
- Mission San Jose
- Niles
- Warm Springs
- Jump to TripAdvisor's Tourism page for Fremont <4>
- Hayward
(13 miles [20.9 km] to the southwest)- Jump to our Gazetteer entry for Hayward
- Hayward is located in Alameda County
- Population from the 2020 Census: 157,966 people
- Jump to TripAdvisor's Tourism page for Hayward <4>
- Concord
(10 miles [16.1 km] to the northwest)- Jump to our Gazetteer entry for Concord
- Concord is located in Contra Costa County
- Population from the 2020 Census: 128,544 people
- Jump to TripAdvisor's Tourism page for Concord <4>
- Berkeley
(17 miles [27.4 km] to the west)- Jump to our Gazetteer entry for Berkeley
- Berkeley is located in Alameda County
- Population from the 2020 Census: 122,726 people
- Jump to TripAdvisor's Tourism page for Berkeley <4>
- Antioch
(14 miles [22.5 km] to the northeast)- Jump to our Gazetteer entry for Antioch
- Antioch is located in Contra Costa County
- Population from the 2020 Census: 111,605 people
- Jump to TripAdvisor's Tourism page for Antioch <4>
- Livermore
(14 miles [22.5 km] to the southeast)- Jump to our Gazetteer entry for Livermore
- Livermore is located in Alameda County
- Population from the 2020 Census: 91,617 people
- Jump to TripAdvisor's Tourism page for Livermore <4>
- San Leandro
(13 miles [20.9 km] to the southwest)- Jump to our Gazetteer entry for San Leandro
- San Leandro is located in Alameda County
- Population from the 2020 Census: 89,161 people
- Jump to TripAdvisor's Tourism page for San Leandro <4>
- San Ramon
(4 miles [6.4 km] to the south)- Jump to our Gazetteer entry for San Ramon
- San Ramon is located in Contra Costa County
- Population from the 2020 Census: 82,865 people
- Jump to TripAdvisor's Tourism page for San Ramon <4>
- Pleasanton
(12 miles [19.3 km] to the south)- Jump to our Gazetteer entry for Pleasanton
- Pleasanton is located in Alameda County
- Population from the 2020 Census: 80,247 people
- Jump to TripAdvisor's Tourism page for Pleasanton <4>
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 Diablo. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Diablo.
Using the information from an 1895 Atlas, we've created a list of communities that were in the area of Diablo. 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 Diablo.
We also have a detailed list of newspapers that have been published in the area around Diablo. See our Newspapers Page for Diablo.
TripAdvisor Tourism Pages for Diablo ...
Looking for more information about Diablo? 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 Diablo, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for Diablo.
Adding Diablo to Our Gazetteer ...
We originally found mention of Diablo 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 Diablo was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<5>
From that list, the Diablo post office opened in 1916.
For more details, see References and Mentions for Diablo.
Off-the-Road Links ...
Unfortunately, we don't know of a website for Diablo. If you can help, please contact us through our Feedback Page.
The official website for Contra Costa County: www.co.contra-costa.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 Contra Costa, have changed over time, we recommend the Atlas of Historical County Boundaries. |
| <2> | The elevation is an estimate for the area around Diablo - it will be higher in some places and lower in others. |
| <3> | 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 Diablo). When looking for a ZIP Code, whether Diablo or elsewhere, it's always best to check the website of the United States Postal Service (USPS). |
| <4> | While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program. |
| <5> | A copy of their list with background information can be found at: https://cblevins.github.io/us-post-offices/data-biography/ |