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 — ZIP/92143

92143

ZIP 92143 is in San Ysidro, California, in San Diego County; Pacific time. San Ysidro has 2 ZIP codes; the other is 92173.

Type
No street area
Time zone
America/Los_Angeles
County
San Diego
Coordinates
33.2553, -116.5664

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 92086, whose figures describe that area — not this ZIP code.

☼ Live from 92143 — San Ysidro, CA

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Where 92143 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 92143
  • 🔢 Type 92143 into a pocket calculator and turn it upside down: EhIZG — not quite a word, sorry.
  • ➕ 92143 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110011111101111
  • 🏠 Its numerical neighbours: 92142 (San Diego, CA, 51 mi away) and 92145 (San Diego, CA, 43 mi away).
  • 🔄 Backwards, 92143 becomes 34129, which is not a ZIP code at all.
  • 👥 41 other ZIP codes are made of exactly the same digits (12439, 12493, 12934, 12943, 13492, 19342, …). The farthest-flung twin is 12934 in Ellenburg Center, NY, 2,395 miles away.
  • 🧭 Farther south than 83% of all ZIP codes, and farther west than 89%.
  • 🎯1,094 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 92143 and you would come out at 33.26°S, 63.43°E — 975 miles from Port Louis, Mauritius, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 21m of daylight. Shortest: 9h 57m.
🌙 The sky over 92143 today
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Source: USGS.

Business and tax activity

Business establishments5This ZIP5
Employees85This ZIP85
Annual payroll$1,951,000This ZIP$1,951,000

Land area

ZIP codes near 92143

ZIPCityDistance
92066 Ranchita, CA 3.3 mi
92086 Warner Springs, CA 5.5 mi
92070 Santa Ysabel, CA 11.2 mi
92060 Palomar Mountain, CA 18.4 mi
92539 Anza, CA 19.4 mi
92061 Pauma Valley, CA 21.3 mi
92065 Ramona, CA 21.3 mi
92536 Aguanga, CA 21.8 mi
92036 Julian, CA 23.3 mi
92004 Borrego Springs, CA 23.4 mi

Find every ZIP code within 10 miles of 92143 →

Questions about this ZIP code

Where is ZIP code 92143?

92143 is in San Ysidro, California, in San Diego County, part of the San Diego-Chula Vista-Carlsbad, CA metropolitan area. Its published point location is 33.2553, -116.5664.

What county is 92143 in?

92143 lies in San Diego County.

What time zone is 92143 in?

92143 uses America/Los_Angeles.

What ZIP codes are near 92143?

The closest are 92066 (3.3 mi), 92086 (5.5 mi), 92070 (11.2 mi), 92060 (18.4 mi) and 92539 (19.4 mi).

Is 92143 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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Cite this page

zipcodes.pro. “92143 ZIP Code — San Ysidro, California (San Diego County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/92143

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/92143.json

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