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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/94123

94123

ZIP 94123 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
Standard
Time zone
America/Los_Angeles
County
San Francisco
Population
24,054
Coordinates
37.8020, -122.4340
☼ Live from 94123 — San Francisco, CA

Weather right now

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NEXRAD radar
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Local time: —

Where 94123 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 94123
  • 🔢 Type 94123 into a pocket calculator and turn it upside down: EZIhG — not quite a word, sorry.
  • ➕ As a number, 94,123 = 61 × 1543. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110111110101011
  • 🏠 Its numerical neighbours: 94122 (San Francisco, CA, 4 mi away) and 94124 (San Francisco, CA, 6 mi away).
  • 🔄 Backwards, 94123 becomes 32149 — and that is a real ZIP code: Interlachen, FL, 2,378 miles away.
  • 👥 41 other ZIP codes are made of exactly the same digits (12439, 12493, 12934, 12943, 13492, 19342, …). The farthest-flung twin is 12493 in West Park, NY, 2,553 miles away.
  • 🧭 Farther south than 59% 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 94123 and you would come out at 37.80°S, 57.57°E — 1,016 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 32m.
  • 📏 At 1.1 square miles of land, 94123 is bigger than 8% of ZIP codes — about 519 football fields.
🌙 The sky over 94123 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population24,054This ZIP24,054
Households12,605This ZIP12,605
Housing units15,129This ZIP15,129
Median age32.9This ZIP32.9California37.9US 38.9
Median household income$218,603This ZIP$218,603California$99,122US $80,734
Median home value$2,000,000+This ZIP$2,000,000+California$734,700US $332,700
Median gross rent$3,289This ZIP$3,289California$2,036US $1,413
Bachelor's degree or higher83.9%This ZIP83.9%
Mean commute32.0 minThis ZIP32.0 min
Population density22,417.5 / sq miThis ZIP22,417.5 / sq mi

Business and tax activity

Business establishments1,125This ZIP1,125
Employees9,873This ZIP9,873
Annual payroll$583,069,000This ZIP$583,069,000
Tax returns filed13,960This ZIP13,960
Total adjusted gross income$5,797,277,000This ZIP$5,797,277,000

Land area

Land area1.07 sq miThis ZIP1.07 sq mi
Water area0.30 sq miThis ZIP0.30 sq mi

Other place names in 94123

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 94123

ZIPCityDistance
94109 San Francisco, CA 0.8 mi
94115 San Francisco, CA 1.1 mi
94133 San Francisco, CA 1.3 mi
94108 San Francisco, CA 1.6 mi
94129 San Francisco, CA 1.7 mi
94102 San Francisco, CA 1.7 mi
94104 San Francisco, CA 1.9 mi
94111 San Francisco, CA 1.9 mi
94119 San Francisco, CA 2.0 mi
94120 San Francisco, CA 2.0 mi

Find every ZIP code within 10 miles of 94123 →

Questions about this ZIP code

Where is ZIP code 94123?

94123 is in San Francisco, California, in San Francisco County, part of the San Francisco-Oakland-Fremont, CA metropolitan area. Its published point location is 37.8020, -122.4340.

What county is 94123 in?

94123 lies in San Francisco County.

What area code is 94123?

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

What time zone is 94123 in?

94123 uses America/Los_Angeles.

How many people live in 94123?

About 24,054 people live in ZIP code 94123, in 12,605 households, at 22,417.5 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 94123?

$218,603 a year, against $99,122 across California.

What ZIP codes are near 94123?

The closest are 94109 (0.8 mi), 94115 (1.1 mi), 94133 (1.3 mi), 94108 (1.6 mi) and 94129 (1.7 mi).

Is 94123 a PO Box ZIP code?

94123 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “94123 ZIP Code — San Francisco, California (San Francisco County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/94123

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