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/94901

94901

ZIP 94901 is in San Rafael, California, in Marin County; area codes 415 and 628; Pacific time. San Rafael has 5 ZIP codes; the others are 94903, 94912, 94913 and 94915.

Type
Standard
Time zone
America/Los_Angeles
County
Marin
Population
41,307
Coordinates
37.9807, -122.5006
☼ Live from 94901 — San Rafael, CA

Weather right now

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NEXRAD radar
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Local time: —

Where 94901 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 94901
  • 🔢 Type 94901 into a pocket calculator and turn it upside down: IOGhG — not quite a word, sorry.
  • ➕ As a number, 94,901 = 43 × 2207. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111001010110101
  • 🏠 Its numerical neighbours: 94850 (Richmond, CA, 9 mi away) and 94903 (San Rafael, CA, 4 mi away).
  • 🔄 Backwards, 94901 becomes 10949 — and that is a real ZIP code: Monroe, NY, 2,547 miles away.
  • 👥 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, 5,011 miles away.
  • 🧭 Farther south than 58% 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 94901 and you would come out at 37.98°S, 57.50°E — 1,008 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 48m of daylight. Shortest: 9h 31m.
  • 📏 At 13.1 square miles of land, 94901 is bigger than 31% of ZIP codes — room for about 9.9 Central Parks.
🌙 The sky over 94901 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population41,307This ZIP41,307
Households15,631This ZIP15,631
Housing units16,233This ZIP16,233
Median age41.6This ZIP41.6California37.9US 38.9
Median household income$115,330This ZIP$115,330California$99,122US $80,734
Median home value$1,512,600This ZIP$1,512,600California$734,700US $332,700
Median gross rent$2,256This ZIP$2,256California$2,036US $1,413
Bachelor's degree or higher49.0%This ZIP49.0%
Mean commute24.0 minThis ZIP24.0 min
Population density3,152.7 / sq miThis ZIP3,152.7 / sq mi

Business and tax activity

Business establishments2,001This ZIP2,001
Employees24,497This ZIP24,497
Annual payroll$2,060,777,000This ZIP$2,060,777,000
Tax returns filed19,350This ZIP19,350
Total adjusted gross income$3,465,550,000This ZIP$3,465,550,000

Land area

Land area13.10 sq miThis ZIP13.10 sq mi
Water area3.38 sq miThis ZIP3.38 sq mi

Other place names in 94901

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

ZIP codes near 94901

ZIPCityDistance
94912 San Rafael, CA 1.7 mi
94913 San Rafael, CA 1.7 mi
94964 San Quentin, CA 2.8 mi
94974 San Quentin, CA 2.9 mi
94979 San Anselmo, CA 3.3 mi
94925 Corte Madera, CA 3.4 mi
94939 Larkspur, CA 3.5 mi
94957 Ross, CA 3.5 mi
94904 Greenbrae, CA 3.6 mi
94914 Kentfield, CA 3.7 mi

Find every ZIP code within 10 miles of 94901 →

Questions about this ZIP code

Where is ZIP code 94901?

94901 is in San Rafael, California, in Marin County, part of the San Francisco-Oakland-Fremont, CA metropolitan area. Its published point location is 37.9807, -122.5006.

What county is 94901 in?

94901 lies in Marin County.

What area code is 94901?

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

What time zone is 94901 in?

94901 uses America/Los_Angeles.

How many people live in 94901?

About 41,307 people live in ZIP code 94901, in 15,631 households, at 3,152.7 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 94901?

$115,330 a year, against $99,122 across California.

What ZIP codes are near 94901?

The closest are 94912 (1.7 mi), 94913 (1.7 mi), 94964 (2.8 mi), 94974 (2.9 mi) and 94979 (3.3 mi).

Is 94901 a PO Box ZIP code?

94901 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “94901 ZIP Code — San Rafael, California (Marin County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/94901

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