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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/90740

90740

ZIP 90740 is Seal Beach, California, mostly in Orange County; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
Orange +1 more
Population
24,254
Coordinates
33.7543, -118.0733
☼ Live from 90740 — Seal Beach, CA

Weather right now

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Local time: —

Where 90740 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 90740
  • 🔢 Type 90740 into a pocket calculator and turn it upside down: OhLOG — not quite a word, sorry.
  • ➕ As a number, 90,740 = 2 × 2 × 5 × 13 × 349. Its digits add up to 20, a total 2,586 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110001001110100
  • 🏠 Its numerical neighbours: 90734 (San Pedro, CA, 13 mi away) and 90742 (Sunset Beach, CA, 2 mi away).
  • 🔄 Backwards, 90740 becomes 04709, which is not a ZIP code at all.
  • 👥 23 other ZIP codes are made of exactly the same digits (00794, 04079, 04097, 04970, 07094, 07940, …). The farthest-flung twin is 09740 in APO AE, a military post office, 8,216 miles away.
  • 🧭 Farther south than 81% of all ZIP codes, and farther west than 91%.
  • 🎯1,154 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 90740 and you would come out at 33.75°S, 61.93°E — 974 miles from Saint-Denis, Reunion, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 24m of daylight. Shortest: 9h 54m.
  • 📏 At 11.1 square miles of land, 90740 is bigger than 29% of ZIP codes — room for about 8.4 Central Parks.
🌙 The sky over 90740 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population24,254This ZIP24,254
Households12,642This ZIP12,642
Housing units14,243This ZIP14,243
Median age61.6This ZIP61.6California37.9US 38.9
Median household income$85,347This ZIP$85,347California$99,122US $80,734
Median home value$484,100This ZIP$484,100California$734,700US $332,700
Median gross rent$2,652This ZIP$2,652California$2,036US $1,413
Bachelor's degree or higher51.4%This ZIP51.4%
Mean commute29.0 minThis ZIP29.0 min
Population density2,183.1 / sq miThis ZIP2,183.1 / sq mi

Business and tax activity

Business establishments766This ZIP766
Employees11,439This ZIP11,439
Annual payroll$891,194,000This ZIP$891,194,000
Tax returns filed13,720This ZIP13,720
Total adjusted gross income$1,898,379,000This ZIP$1,898,379,000

Land area

Land area11.11 sq miThis ZIP11.11 sq mi
Water area0.97 sq miThis ZIP0.97 sq mi

Counties 90740 spans

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

CountyShare of this ZIP
Orange County 99.9%
Los Angeles County 0.1%

Other place names in 90740

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

ZIP codes near 90740

ZIPCityDistance
90743 Surfside, CA 2.0 mi
90742 Sunset Beach, CA 2.3 mi
92649 Huntington Beach, CA 2.8 mi
90720 Los Alamitos, CA 2.9 mi
90822 Long Beach, CA 3.1 mi
92846 Garden Grove, CA 3.3 mi
90721 Los Alamitos, CA 3.3 mi
92845 Garden Grove, CA 3.3 mi
90803 Long Beach, CA 3.4 mi
90840 Long Beach, CA 3.5 mi

Find every ZIP code within 10 miles of 90740 →

Questions about this ZIP code

Where is ZIP code 90740?

90740 is in Seal Beach, California, in Orange County, part of the Los Angeles-Long Beach-Anaheim, CA metropolitan area. Its published point location is 33.7543, -118.0733.

What county is 90740 in?

90740 spans 2 counties: Orange County and Los Angeles County. Most of it falls in Orange 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 time zone is 90740 in?

90740 uses America/Los_Angeles.

How many people live in 90740?

About 24,254 people live in ZIP code 90740, in 12,642 households, at 2,183.1 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 90740?

$85,347 a year, against $99,122 across California.

What ZIP codes are near 90740?

The closest are 90743 (2 mi), 90742 (2.3 mi), 92649 (2.8 mi), 90720 (2.9 mi) and 90822 (3.1 mi).

Is 90740 a PO Box ZIP code?

90740 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “90740 ZIP Code — Seal Beach, California (Orange County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/90740

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/90740.json

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