Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/CA/SAN-YSIDRO

San Ysidro ZIP codes, California

San Ysidro, CA has 2 ZIP codes: 92173 and 92143. The largest is 92173.

USPS city name
2 ZIP codes
Population
27,585

San Ysidro in numbers

About 27,585 people live in San Ysidro, in 7,952 households. The median household income is $69,792 a year, 30% below the California median of $99,122 (US: $80,734). The median owner-occupied home is valued at $535,000 (27% below the California median).

Population27,585San Ysidro27,585
Households7,952San Ysidro7,952
Median household income$69,792San Ysidro$69,792California$99,122US $80,734
Median home value$535,000San Ysidro$535,000California$734,700US $332,700

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the 2 ZIP codes addressed as San Ysidro, medians weighted by households. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as San Ysidro

ZIP codes with the USPS city name San Ysidro
ZIP City Type Population Median income Median home
92173 San Ysidro , CA Standard 27,585 $69,792 $535,000
92143 San Ysidro , CA No street area — — —

Map of San Ysidro ZIP codes

9217392143

The ZIP codes of San Ysidro, CA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near San Ysidro

The nearest larger towns are Santee (59,332 people, 11 mi), El Cajon (104,449 people, 11 mi) and Poway (48,713 people, 14 mi).

Towns near San Ysidro
TownPopulationDistance
Alpine 15,180 5.3 mi
Harbison Canyon 4,328 5.7 mi
Lakeside 22,447 6.5 mi
San Diego Country Estates 10,223 7.3 mi
Eucalyptus Hills 5,840 8.0 mi
Crest 2,775 8.0 mi
Winter Gardens 22,131 8.3 mi
Granite Hills 3,795 9.0 mi
Bostonia 16,765 9.8 mi
Ramona 22,634 10.5 mi
Santee 59,332 10.9 mi
El Cajon 104,449 11.4 mi
Rancho San Diego 21,272 11.8 mi
Jamul 6,574 13.4 mi

More nearby: every ZIP code in San Diego County · California ZIP codes

Cite this page

zipcodes.pro. “San Ysidro, CA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ca/san-ysidro

Underlying data is public domain or openly licensed — sources, vintages and licences.