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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/94109

94109

ZIP 94109 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
54,553
Coordinates
37.7945, -122.4223
☼ Live from 94109 — San Francisco, CA

Weather right now

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Where 94109 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 94109
  • 🔢 Type 94109 into a pocket calculator and turn it upside down: GOIhG — not quite a word, sorry.
  • ➕ 94109 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110111110011101
  • 🏠 Its numerical neighbours: 94108 (San Francisco, CA, 1 mi away) and 94110 (San Francisco, CA, 3 mi away).
  • 🔄 Backwards, 94109 becomes 90149, which is not a ZIP code at all.
  • 👥 22 other ZIP codes are made of exactly the same digits (01949, 09419, 10949, 10994, 19049, 19094, …). The farthest-flung twin is 09419 in FPO AE, a military post office, 5,020 miles away.
  • 🧭 Farther south than 59% of all ZIP codes, and farther west than 97%.
  • 🎯1,287 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 94109 and you would come out at 37.79°S, 57.58°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 33m.
  • 📏 At 1.1 square miles of land, 94109 is bigger than 8% of ZIP codes — about 522 football fields.
🌙 The sky over 94109 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population54,553This ZIP54,553
Households31,491This ZIP31,491
Housing units39,490This ZIP39,490
Median age39.4This ZIP39.4California37.9US 38.9
Median household income$106,018This ZIP$106,018California$99,122US $80,734
Median home value$1,300,300This ZIP$1,300,300California$734,700US $332,700
Median gross rent$2,177This ZIP$2,177California$2,036US $1,413
Bachelor's degree or higher63.8%This ZIP63.8%
Mean commute29.2 minThis ZIP29.2 min
Population density50,558.9 / sq miThis ZIP50,558.9 / sq mi

Business and tax activity

Business establishments1,678This ZIP1,678
Employees25,710This ZIP25,710
Annual payroll$2,208,100,000This ZIP$2,208,100,000
Tax returns filed28,540This ZIP28,540
Total adjusted gross income$4,938,765,000This ZIP$4,938,765,000

Land area

Land area1.08 sq miThis ZIP1.08 sq mi
Water area0.11 sq miThis ZIP0.11 sq mi

Other place names in 94109

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

ZIP codes near 94109

ZIPCityDistance
94108 San Francisco, CA 0.8 mi
94133 San Francisco, CA 0.8 mi
94123 San Francisco, CA 0.8 mi
94115 San Francisco, CA 1.0 mi
94102 San Francisco, CA 1.0 mi
94104 San Francisco, CA 1.1 mi
94111 San Francisco, CA 1.3 mi
94119 San Francisco, CA 1.4 mi
94120 San Francisco, CA 1.4 mi
94125 San Francisco, CA 1.4 mi

Find every ZIP code within 10 miles of 94109 →

Questions about this ZIP code

Where is ZIP code 94109?

94109 is in San Francisco, California, in San Francisco County, part of the San Francisco-Oakland-Fremont, CA metropolitan area. Its published point location is 37.7945, -122.4223.

What county is 94109 in?

94109 lies in San Francisco County.

What area code is 94109?

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

What time zone is 94109 in?

94109 uses America/Los_Angeles.

How many people live in 94109?

About 54,553 people live in ZIP code 94109, in 31,491 households, at 50,558.9 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 94109?

$106,018 a year, against $99,122 across California.

What ZIP codes are near 94109?

The closest are 94108 (0.8 mi), 94133 (0.8 mi), 94123 (0.8 mi), 94115 (1 mi) and 94102 (1 mi).

Is 94109 a PO Box ZIP code?

94109 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “94109 ZIP Code — San Francisco, California (San Francisco County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/94109

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