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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/94131

94131

ZIP 94131 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
28,504
Coordinates
37.7459, -122.4415
☼ Live from 94131 — San Francisco, CA

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Where 94131 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 94131
  • 🔢 Type 94131 into a pocket calculator and turn it upside down: IEIhG — not quite a word, sorry.
  • ➕ As a number, 94,131 = 3 × 3 × 10459. Its digits add up to 18, a total 2,332 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110111110110011
  • 🏠 Its numerical neighbours: 94130 (San Francisco, CA, 6 mi away) and 94132 (San Francisco, CA, 3 mi away).
  • 🔄 Backwards, 94131 becomes 13149, which is not a ZIP code at all.
  • 👥 17 other ZIP codes are made of exactly the same digits (11439, 11934, 13491, 14139, 19134, 19143, …). The farthest-flung twin is 11934 in Center Moriches, NY, 2,628 miles away.
  • 🧭 Farther south than 60% of all ZIP codes, and farther west than 97%.
  • 🎯1,289 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 94131 and you would come out at 37.75°S, 57.56°E — 1,019 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.
  • 📏 At 2.0 square miles of land, 94131 is bigger than 12% of ZIP codes — room for about 1.5 Central Parks.
🌙 The sky over 94131 today
  • Working out the sun…
🌋 Shake report
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Source: USGS.

People and housing

Population28,504This ZIP28,504
Households12,522This ZIP12,522
Housing units13,920This ZIP13,920
Median age39.9This ZIP39.9California37.9US 38.9
Median household income$199,211This ZIP$199,211California$99,122US $80,734
Median home value$1,713,300This ZIP$1,713,300California$734,700US $332,700
Median gross rent$3,064This ZIP$3,064California$2,036US $1,413
Bachelor's degree or higher76.6%This ZIP76.6%
Mean commute31.3 minThis ZIP31.3 min
Population density14,096.9 / sq miThis ZIP14,096.9 / sq mi

Business and tax activity

Business establishments484This ZIP484
Employees2,519This ZIP2,519
Annual payroll$202,590,000This ZIP$202,590,000
Tax returns filed14,790This ZIP14,790
Total adjusted gross income$4,068,591,000This ZIP$4,068,591,000

Land area

Land area2.02 sq miThis ZIP2.02 sq mi
Water area0.02 sq miThis ZIP0.02 sq mi

Other place names in 94131

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

ZIP codes near 94131

ZIPCityDistance
94114 San Francisco, CA 0.9 mi
94127 San Francisco, CA 1.1 mi
94110 San Francisco, CA 1.5 mi
94143 San Francisco, CA 1.5 mi
94117 San Francisco, CA 1.7 mi
94112 San Francisco, CA 1.8 mi
94119 San Francisco, CA 2.3 mi
94120 San Francisco, CA 2.3 mi
94125 San Francisco, CA 2.3 mi
94126 San Francisco, CA 2.3 mi

Find every ZIP code within 10 miles of 94131 →

Questions about this ZIP code

Where is ZIP code 94131?

94131 is in San Francisco, California, in San Francisco County, part of the San Francisco-Oakland-Fremont, CA metropolitan area. Its published point location is 37.7459, -122.4415.

What county is 94131 in?

94131 lies in San Francisco County.

What area code is 94131?

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

What time zone is 94131 in?

94131 uses America/Los_Angeles.

How many people live in 94131?

About 28,504 people live in ZIP code 94131, in 12,522 households, at 14,096.9 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 94131?

$199,211 a year, against $99,122 across California.

What ZIP codes are near 94131?

The closest are 94114 (0.9 mi), 94127 (1.1 mi), 94110 (1.5 mi), 94143 (1.5 mi) and 94117 (1.7 mi).

Is 94131 a PO Box ZIP code?

94131 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “94131 ZIP Code — San Francisco, California (San Francisco County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/94131

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