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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/94933

94933

ZIP 94933 is Forest Knolls, California, in Marin County; area codes 415 and 628; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
Marin
Population
1,033
Coordinates
38.0175, -122.6881
☼ Live from 94933 — Forest Knolls, CA

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Where 94933 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 94933
  • 🔢 Type 94933 into a pocket calculator and turn it upside down: EEGhG — not quite a word, sorry.
  • ➕ 94933 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 28, a total 1,520 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111001011010101
  • 🏠 Its numerical neighbours: 94931 (Cotati, CA, 21 mi away) and 94937 (Inverness, CA, 15 mi away).
  • 🔄 Backwards, 94933 becomes 33949 — and that is a real ZIP code: Port Charlotte, FL, 2,463 miles away.
  • 👥 8 other ZIP codes are made of exactly the same digits (33499, 33949, 33994, 39439, 43939, 49339, …). The farthest-flung twin is 33499 in Boca Raton, FL, 2,593 miles away.
  • 🧭 Farther south than 58% of all ZIP codes, and farther west than 97%.
  • 🎯1,298 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 94933 and you would come out at 38.02°S, 57.31°E — 1,011 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 3.2 square miles of land, 94933 is bigger than 15% of ZIP codes — room for about 2.4 Central Parks.
🌙 The sky over 94933 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,033This ZIP1,033
Households563This ZIP563
Housing units601This ZIP601
Median age62.2This ZIP62.2California37.9US 38.9
Median household income$133,006This ZIP$133,006California$99,122US $80,734
Median home value$862,100This ZIP$862,100California$734,700US $332,700
Bachelor's degree or higher52.6%This ZIP52.6%
Mean commute35.5 minThis ZIP35.5 min
Population density321.7 / sq miThis ZIP321.7 / sq mi

Business and tax activity

Business establishments13This ZIP13
Employees68This ZIP68
Annual payroll$4,720,000This ZIP$4,720,000

Land area

Land area3.21 sq miThis ZIP3.21 sq mi
Water area0.00 sq mi

Other place names in 94933

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

ZIP codes near 94933

ZIPCityDistance
94963 San Geronimo, CA 1.4 mi
94938 Lagunitas, CA 2.4 mi
94973 Woodacre, CA 2.7 mi
94946 Nicasio, CA 4.0 mi
94950 Olema, CA 4.0 mi
94924 Bolinas, CA 4.5 mi
94930 Fairfax, CA 5.2 mi
94978 Fairfax, CA 5.8 mi
94960 San Anselmo, CA 6.1 mi
94970 Stinson Beach, CA 6.5 mi

Find every ZIP code within 10 miles of 94933 →

Questions about this ZIP code

Where is ZIP code 94933?

94933 is in Forest Knolls, California, in Marin County, part of the San Francisco-Oakland-Fremont, CA metropolitan area. Its published point location is 38.0175, -122.6881.

What county is 94933 in?

94933 lies in Marin County.

What area code is 94933?

Forest Knolls uses area codes 415 and 628, from NANPA's telephone records.

What time zone is 94933 in?

94933 uses America/Los_Angeles.

How many people live in 94933?

About 1,033 people live in ZIP code 94933, in 563 households, at 321.7 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 94933?

$133,006 a year, against $99,122 across California.

What ZIP codes are near 94933?

The closest are 94963 (1.4 mi), 94938 (2.4 mi), 94973 (2.7 mi), 94946 (4 mi) and 94950 (4 mi).

Is 94933 a PO Box ZIP code?

94933 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “94933 ZIP Code — Forest Knolls, California (Marin County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/94933

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