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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/91976

91976

ZIP 91976 is in Spring Valley, California, in San Diego County; area codes 619 and 858; Pacific time. Spring Valley has 4 ZIP codes; the others are 91977, 91978 and 91979.

Type
No street area
Time zone
America/Los_Angeles
County
San Diego
Coordinates
32.7448, -116.9989

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 91977, whose figures describe that area — not this ZIP code.

☼ Live from 91976 — Spring Valley, CA

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Where 91976 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 91976
  • 🔢 Type 91976 into a pocket calculator and turn it upside down: gLGIG — not quite a word, sorry.
  • ➕ As a number, 91,976 = 2 × 2 × 2 × 11497. Its digits add up to 32, a total 644 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110011101001000
  • 🏠 Its numerical neighbours: 91963 (Potrero, CA, 24 mi away) and 91977 (Spring Valley, CA, 1 mi away).
  • 🔄 Backwards, 91976 becomes 67919, which is not a ZIP code at all.
  • 👥 16 other ZIP codes are made of exactly the same digits (17699, 19967, 61799, 71969, 76199, 79916, …). The farthest-flung twin is 96917 in Inarajan, GU, 6,192 miles away.
  • 🧭 Farther south than 85% of all ZIP codes, and farther west than 90%.
  • 🎯1,134 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 91976 and you would come out at 32.74°S, 63.00°E — 933 miles from Port Louis, Mauritius, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 19m of daylight. Shortest: 9h 59m.
🌙 The sky over 91976 today
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Source: USGS.

Land area

ZIP codes near 91976

ZIPCityDistance
91979 Spring Valley, CA 0.0 mi
91941 La Mesa, CA 1.0 mi
91977 Spring Valley, CA 1.3 mi
91946 Lemon Grove, CA 1.9 mi
91943 La Mesa, CA 2.1 mi
91944 La Mesa, CA 2.1 mi
91945 Lemon Grove, CA 2.2 mi
91942 La Mesa, CA 2.6 mi
92020 El Cajon, CA 3.9 mi
92022 El Cajon, CA 4.1 mi

Find every ZIP code within 10 miles of 91976 →

Questions about this ZIP code

Where is ZIP code 91976?

91976 is in Spring Valley, California, in San Diego County, part of the San Diego-Chula Vista-Carlsbad, CA metropolitan area. Its published point location is 32.7448, -116.9989.

What county is 91976 in?

91976 lies in San Diego County.

What area code is 91976?

Spring Valley uses area codes 619 and 858, from NANPA's telephone records.

What time zone is 91976 in?

91976 uses America/Los_Angeles.

What ZIP codes are near 91976?

The closest are 91979 (0 mi), 91941 (1 mi), 91977 (1.3 mi), 91946 (1.9 mi) and 91943 (2.1 mi).

Is 91976 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. “91976 ZIP Code — Spring Valley, California (San Diego County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/91976

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/91976.json

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