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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/90404

90404

ZIP 90404 is in Santa Monica, California, in Los Angeles County; Pacific time. Santa Monica has 11 ZIP codes in all.

Type
Standard
Time zone
America/Los_Angeles
County
Los Angeles
Population
22,978
Coordinates
34.0266, -118.4738
☼ Live from 90404 — Santa Monica, CA

Weather right now

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Local time: —

Where 90404 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 90404
  • 🔢 Type 90404 into a pocket calculator and turn it upside down: hOhOG — not quite a word, sorry.
  • ➕ As a number, 90,404 = 2 × 2 × 97 × 233. Its digits add up to 17, a total 2,133 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110000100100100
  • 🏠 Its numerical neighbours: 90403 (Santa Monica, CA, 1 mi away) and 90405 (Santa Monica, CA, 1 mi away).
  • 🔄 Backwards, 90404 becomes 40409 — and that is a real ZIP code: Brodhead, KY, 1,913 miles away.
  • 👥 13 other ZIP codes are made of exactly the same digits (04049, 04094, 04490, 04940, 09044, 40049, …). The farthest-flung twin is 09044 in APO AE, a military post office, 5,880 miles away.
  • 🧭 Farther south than 79% of all ZIP codes, and farther west than 92%.
  • 🎯1,167 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 90404 and you would come out at 34.03°S, 61.53°E — 981 miles from Saint-Denis, Reunion, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 25m of daylight. Shortest: 9h 53m.
  • 📏 At 2.0 square miles of land, 90404 is bigger than 11% of ZIP codes — room for about 1.5 Central Parks.
🌙 The sky over 90404 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population22,978This ZIP22,978
Households10,714This ZIP10,714
Housing units11,801This ZIP11,801
Median age40.5This ZIP40.5California37.9US 38.9
Median household income$95,139This ZIP$95,139California$99,122US $80,734
Median home value$1,244,400This ZIP$1,244,400California$734,700US $332,700
Median gross rent$2,239This ZIP$2,239California$2,036US $1,413
Bachelor's degree or higher61.1%This ZIP61.1%
Mean commute20.6 minThis ZIP20.6 min
Population density11,658.0 / sq miThis ZIP11,658.0 / sq mi

Business and tax activity

Business establishments1,574This ZIP1,574
Employees32,963This ZIP32,963
Annual payroll$6,138,109,000This ZIP$6,138,109,000
Tax returns filed10,980This ZIP10,980
Total adjusted gross income$1,351,191,000This ZIP$1,351,191,000

Land area

Land area1.97 sq miThis ZIP1.97 sq mi
Water area0.00 sq mi

Other place names in 90404

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

ZIP codes near 90404

ZIPCityDistance
90405 Santa Monica, CA 1.1 mi
90403 Santa Monica, CA 1.1 mi
90406 Santa Monica, CA 1.1 mi
90407 Santa Monica, CA 1.1 mi
90408 Santa Monica, CA 1.1 mi
90409 Santa Monica, CA 1.1 mi
90410 Santa Monica, CA 1.1 mi
90411 Santa Monica, CA 1.1 mi
90401 Santa Monica, CA 1.3 mi
90402 Santa Monica, CA 1.8 mi

Find every ZIP code within 10 miles of 90404 →

Questions about this ZIP code

Where is ZIP code 90404?

90404 is in Santa Monica, California, in Los Angeles County, part of the Los Angeles-Long Beach-Anaheim, CA metropolitan area. Its published point location is 34.0266, -118.4738.

What county is 90404 in?

90404 lies in Los Angeles County.

What time zone is 90404 in?

90404 uses America/Los_Angeles.

How many people live in 90404?

About 22,978 people live in ZIP code 90404, in 10,714 households, at 11,658.0 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 90404?

$95,139 a year, against $99,122 across California.

What ZIP codes are near 90404?

The closest are 90405 (1.1 mi), 90403 (1.1 mi), 90406 (1.1 mi), 90407 (1.1 mi) and 90408 (1.1 mi).

Is 90404 a PO Box ZIP code?

90404 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “90404 ZIP Code — Santa Monica, California (Los Angeles County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/90404

Machine-readable version of these facts:

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