Welcome to San Ysidro ...

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

While we don't have a date for the founding of San Ysidro, you might consider that their post office opened  in 1910.

San Ysidro is 4,000 feet [1,219 m] above sea level.<2> In other words, the altitude of San Ysidro is ¾ mile [or ~1¼ km] above sea level.

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

San Ysidro lies within the (619) area code.

The ZIP codes for San Ysidro: 92143, 92173<3>

Communities Also Named San Ysidro ...

Using our Gazetteer, we found that there are two California communities named San Ysidro: This one is located in San Diego County and the other is located in Santa Clara County.

Beyond California, there are 4 communities that are also named San Ysidro - they are located in New Mexico (2) and Texas.

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

Communities near San Ysidro ...

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

• San Diego
  (12 miles [19.3 km] to the northwest)
  • Jump to our Gazetteer entry for San Diego
  • San Diego is located in San Diego County
  • Population from the 2020 Census: 1,422,420 people
  • Jump to TripAdvisor's Tourism page for San Diego <4>
• Chula Vista
  (5 miles [8 km] to the north)
  • Jump to our Gazetteer entry for Chula Vista
  • Chula Vista is located in San Diego County
  • Population from the 2020 Census: 272,979 people
  • Jump to TripAdvisor's Tourism page for Chula Vista <4>
• El Cajon
  (17 miles [27.4 km] to the north)
  • Jump to our Gazetteer entry for El Cajon
  • El Cajon is located in San Diego County
  • Population from the 2020 Census: 102,401 people
  • Jump to TripAdvisor's Tourism page for El Cajon <4>
• National City
  (8 miles [12.9 km] to the north)
  • Jump to our Gazetteer entry for National City
  • National City is located in San Diego County
  • Population from the 2020 Census: 60,932 people
  • Jump to TripAdvisor's Tourism page for National City <4>
• La Mesa
  (14 miles [22.5 km] to the north)
  • Jump to our Gazetteer entry for La Mesa
  • La Mesa is located in San Diego County
  • Population from the 2020 Census: 59,724 people
  • Jump to TripAdvisor's Tourism page for La Mesa <4>
• Santee
  (19 miles [30.6 km] to the north)
  • Jump to our Gazetteer entry for Santee
  • Santee is located in San Diego County
  • Population from the 2020 Census: 57,770 people
  • Jump to TripAdvisor's Tourism page for Santee <4>
• Imperial Beach
  (4 miles [6.4 km] to the west)
  • Jump to our Gazetteer entry for Imperial Beach
  • Imperial Beach is located in San Diego County
  • Population from the 2020 Census: 27,325 people
  • Jump to TripAdvisor's Tourism page for Imperial Beach <4>
• Lemon Grove
  (12 miles [19.3 km] to the north)
  • Jump to our Gazetteer entry for Lemon Grove
  • Lemon Grove is located in San Diego County
  • Population from the 2020 Census: 26,528 people
  • Jump to TripAdvisor's Tourism page for Lemon Grove <4>
• Coronado
  (11 miles [17.7 km] to the northwest)
  • Jump to our Gazetteer entry for Coronado
  • Coronado is located in San Diego County
  • Population from the 2020 Census: 22,647 people
  • Jump to TripAdvisor's Tourism page for Coronado <4>
• Cockatoo Grove
  (6 miles [9.7 km] to the northeast)
  • Jump to our Gazetteer entry for Cockatoo Grove
  • Cockatoo Grove is located in San Diego County

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

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

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

TripAdvisor Tourism Pages for San Ysidro ...

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

Adding San Ysidro to Our Gazetteer ...

We originally found mention of San Ysidro 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 Ysidro was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<5>

From that list, the San Ysidro post office opened in 1910.

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

Off-the-Road Links ...

Unfortunately, we don't know of a website for San Ysidro. 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/