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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/94920

94920

ZIP 94920 is Belvedere Tiburon, California, mostly in Marin County; area codes 415 and 628; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
Marin +1 more
Population
12,609
Coordinates
37.8868, -122.4626
☼ Live from 94920 — Belvedere Tiburon, CA

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Local time: —

Where 94920 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 94920
  • 🔢 Type 94920 into a pocket calculator and turn it upside down: OZGhG — not quite a word, sorry.
  • ➕ As a number, 94,920 = 2 × 2 × 2 × 3 × 5 × 7 × 113. Its digits add up to 24, a total 2,425 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111001011001000
  • 🏠 Its numerical neighbours: 94915 (San Rafael, CA, 14 mi away) and 94922 (Bodega, CA, 42 mi away).
  • 🔄 Backwards, 94920 becomes 02949, which is not a ZIP code at all.
  • 👥 18 other ZIP codes are made of exactly the same digits (04929, 04992, 09249, 29409, 29904, 29940, …). The farthest-flung twin is 09249 in APO AE, a military post office, 5,682 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 94920 and you would come out at 37.89°S, 57.54°E — 1,012 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 32m.
  • 📏 At 6.5 square miles of land, 94920 is bigger than 22% of ZIP codes — room for about 4.9 Central Parks.
🌙 The sky over 94920 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population12,609This ZIP12,609
Households4,934This ZIP4,934
Housing units5,816This ZIP5,816
Median age51.4This ZIP51.4California37.9US 38.9
Median household income$246,045This ZIP$246,045California$99,122US $80,734
Median home value$2,000,000+This ZIP$2,000,000+California$734,700US $332,700
Median gross rent$3,500+This ZIP$3,500+California$2,036US $1,413
Bachelor's degree or higher81.7%This ZIP81.7%
Mean commute30.0 minThis ZIP30.0 min
Population density1,936.9 / sq miThis ZIP1,936.9 / sq mi

Business and tax activity

Business establishments392This ZIP392
Employees2,566This ZIP2,566
Annual payroll$199,587,000This ZIP$199,587,000
Tax returns filed6,010This ZIP6,010
Total adjusted gross income$5,202,725,000This ZIP$5,202,725,000

Land area

Land area6.51 sq miThis ZIP6.51 sq mi
Water area5.69 sq miThis ZIP5.69 sq mi

Counties 94920 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Marin County 99.9%
San Francisco County 0.1%

Other place names in 94920

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

ZIP codes near 94920

ZIPCityDistance
94966 Sausalito, CA 2.3 mi
94974 San Quentin, CA 4.0 mi
94925 Corte Madera, CA 4.0 mi
94964 San Quentin, CA 4.0 mi
94976 Corte Madera, CA 4.4 mi
94942 Mill Valley, CA 4.7 mi
94965 Sausalito, CA 4.9 mi
94977 Larkspur, CA 5.1 mi
94939 Larkspur, CA 5.4 mi
94801 Richmond, CA 5.6 mi

Find every ZIP code within 10 miles of 94920 →

Questions about this ZIP code

Where is ZIP code 94920?

94920 is in Belvedere Tiburon, California, in Marin County, part of the San Francisco-Oakland-Fremont, CA metropolitan area. Its published point location is 37.8868, -122.4626.

What county is 94920 in?

94920 spans 2 counties: Marin County and San Francisco County. Most of it falls in Marin County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 94920?

Belvedere Tiburon uses area codes 415 and 628, from NANPA's telephone records.

What time zone is 94920 in?

94920 uses America/Los_Angeles.

How many people live in 94920?

About 12,609 people live in ZIP code 94920, in 4,934 households, at 1,936.9 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 94920?

$246,045 a year, against $99,122 across California.

What ZIP codes are near 94920?

The closest are 94966 (2.3 mi), 94974 (4 mi), 94925 (4 mi), 94964 (4 mi) and 94976 (4.4 mi).

Is 94920 a PO Box ZIP code?

94920 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “94920 ZIP Code — Belvedere Tiburon, California (Marin County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/94920

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