Welcome to San Onofre ...

San Onofre is located in San Diego County<1>.

While we don't have a date for the founding of San Onofre, you might consider that their post office opened  in 1917.

San Onofre is near sea level<2>.

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

Telephone area codes for San Onofre: (760) & (442)<3>

Communities near San Onofre ...

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

• Oceanside
  (17 miles [27.4 km] to the southeast)
  • Jump to our Gazetteer entry for Oceanside
  • Oceanside is located in San Diego County
  • Population from the 2020 Census: 174,648 people
  • Jump to TripAdvisor's Tourism page for Oceanside <4>
• Mission Viejo
  (15 miles [24.1 km] to the north)
  • Jump to our Gazetteer entry for Mission Viejo
  • Mission Viejo is located in Orange County
  • Population from the 2020 Census: 94,242 people
  • Jump to TripAdvisor's Tourism page for Mission Viejo <4>
• Lake Forest
  (18 miles [29 km] to the north)
  • Jump to our Gazetteer entry for Lake Forest
  • Lake Forest is located in Orange County
  • Population from the 2020 Census: 85,329 people
  • Jump to TripAdvisor's Tourism page for Lake Forest <4>
• Laguna Niguel
  (12 miles [19.3 km] to the northwest)
  • Jump to our Gazetteer entry for Laguna Niguel
  • Laguna Niguel is located in Orange County
  • Population from the 2020 Census: 64,569 people
  • Jump to TripAdvisor's Tourism page for Laguna Niguel <4>
• San Clemente
  (3 miles [4.8 km] to the northwest)
  • Jump to our Gazetteer entry for San Clemente
  • San Clemente is located in Orange County
  • Population from the 2020 Census: 64,551 people
  • Jump to TripAdvisor's Tourism page for San Clemente <4>
• Aliso Viejo
  (15 miles [24.1 km] to the northwest)
  • Jump to our Gazetteer entry for Aliso Viejo
  • Aliso Viejo is located in Orange County
  • Estimated population in 2015: 50,195 people
  • Jump to TripAdvisor's Tourism page for Aliso Viejo <4>
• Rancho Santa Margarita
  (17 miles [27.4 km] to the north)
  • Jump to our Gazetteer entry for Rancho Santa Margarita
  • Rancho Santa Margarita is located in Orange County
  • Population from the 2020 Census: 47,569 people
  • Jump to TripAdvisor's Tourism page for Rancho Santa Margarita <4>
• San Juan Capistrano
  (9 miles [14.5 km] to the northwest)
  • Jump to our Gazetteer entry for San Juan Capistrano
  • San Juan Capistrano is located in Orange County
  • Population from the 2020 Census: 35,810 people
  • Jump to TripAdvisor's Tourism page for San Juan Capistrano <4>
• Dana Point
  (8 miles [12.9 km] to the northwest)
  • Jump to our Gazetteer entry for Dana Point
  • Dana Point is located in Orange County
  • Population from the 2020 Census: 33,436 people
  • Jump to TripAdvisor's Tourism page for Dana Point <4>
• Laguna Hills
  (15 miles [24.1 km] to the northwest)
  • Jump to our Gazetteer entry for Laguna Hills
  • Laguna Hills is located in Orange County
  • Estimated population in 2015: 31,748 people
  • Jump to TripAdvisor's Tourism page for Laguna Hills <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 San Onofre. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for San Onofre.

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

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

TripAdvisor Tourism Pages for San Onofre ...

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

Adding San Onofre to Our Gazetteer ...

We originally found mention of San Onofre 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 San Onofre was in the book titled Business Atlas and Shippers' Guide (1895).

We also found San Onofre in the book titled .<5> From that list, the San Onofre post office opened in 1917.

For more details, see References and Mentions for San Onofre.

Off-the-Road Links ...

Unfortunately, we don't know of a website for San Onofre. If you can help, please contact us through our Feedback Page.

The official website for San Diego County: www.sdcounty.ca.gov/

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