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/94140

94140

ZIP 94140 is in San Francisco, California, in San Francisco County; area codes 415 and 628; Pacific time. San Francisco has 51 ZIP codes in all.

Type
No street area
Time zone
America/Los_Angeles
County
San Francisco
Coordinates
37.7749, -122.4194

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 94103, whose figures describe that area — not this ZIP code.

☼ Live from 94140 — San Francisco, CA

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Where 94140 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 94140
  • 🔢 Type 94140 into a pocket calculator and turn it upside down: OhIhG — not quite a word, sorry.
  • ➕ As a number, 94,140 = 2 × 2 × 3 × 3 × 5 × 523. Its digits add up to 18, a total 2,332 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110111110111100
  • 🏠 Its numerical neighbours: 94139 (San Francisco, CA, 0 mi away) and 94141 (San Francisco, CA, 0 mi away).
  • 🔄 Backwards, 94140 becomes 04149, which is not a ZIP code at all.
  • 👥 28 other ZIP codes are made of exactly the same digits (01944, 04419, 04491, 04941, 09144, 14094, …). The farthest-flung twin is 09144 in APO AE, a military post office, 5,666 miles away.
  • 🧭 Farther south than 60% of all ZIP codes, and farther west than 97%.
  • 🎯1,288 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 94140 and you would come out at 37.77°S, 57.58°E — 1,017 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 47m of daylight. Shortest: 9h 33m.
🌙 The sky over 94140 today
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🌋 Shake report
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Source: USGS.

Land area

ZIP codes near 94140

ZIPCityDistance
94119 San Francisco, CA 0.0 mi
94120 San Francisco, CA 0.0 mi
94125 San Francisco, CA 0.0 mi
94126 San Francisco, CA 0.0 mi
94137 San Francisco, CA 0.0 mi
94139 San Francisco, CA 0.0 mi
94141 San Francisco, CA 0.0 mi
94142 San Francisco, CA 0.0 mi
94144 San Francisco, CA 0.0 mi
94145 San Francisco, CA 0.0 mi

Find every ZIP code within 10 miles of 94140 →

Questions about this ZIP code

Where is ZIP code 94140?

94140 is in San Francisco, California, in San Francisco County, part of the San Francisco-Oakland-Fremont, CA metropolitan area. Its published point location is 37.7749, -122.4194.

What county is 94140 in?

94140 lies in San Francisco County.

What area code is 94140?

San Francisco uses area codes 415 and 628, from NANPA's telephone records.

What time zone is 94140 in?

94140 uses America/Los_Angeles.

What ZIP codes are near 94140?

The closest are 94119 (0 mi), 94120 (0 mi), 94125 (0 mi), 94126 (0 mi) and 94137 (0 mi).

Is 94140 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. “94140 ZIP Code — San Francisco, California (San Francisco County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/94140

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/94140.json

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