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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/90242

90242

ZIP 90242 is in Downey, California, in Los Angeles County; area code 562; Pacific time. Downey has 4 ZIP codes; the others are 90239, 90240 and 90241.

Type
Standard
Time zone
America/Los_Angeles
County
Los Angeles
Population
40,767
Coordinates
33.9218, -118.1406
☼ Live from 90242 — Downey, CA

Weather right now

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Local time: —

Where 90242 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 90242
  • 🔢 Type 90242 into a pocket calculator and turn it upside down: ZhZOG — not quite a word, sorry.
  • ➕ As a number, 90,242 = 2 × 45121. Its digits add up to 17, a total 2,133 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110000010000010
  • 🏠 Its numerical neighbours: 90241 (Downey, CA, 1 mi away) and 90245 (El Segundo, CA, 15 mi away).
  • 🔄 Backwards, 90242 becomes 24209 — and that is a real ZIP code: Bristol, VA, 2,025 miles away.
  • 👥 30 other ZIP codes are made of exactly the same digits (02492, 04292, 04922, 09242, 09422, 20429, …). The farthest-flung twin is 09242 in APO AE, a military post office, 5,785 miles away.
  • 🧭 Farther south than 80% of all ZIP codes, and farther west than 91%.
  • 🎯1,153 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 90242 and you would come out at 33.92°S, 61.86°E — 982 miles from Saint-Denis, Reunion, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 25m of daylight. Shortest: 9h 54m.
  • 📏 At 4.5 square miles of land, 90242 is bigger than 18% of ZIP codes — room for about 3.4 Central Parks.
🌙 The sky over 90242 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population40,767This ZIP40,767
Households12,419This ZIP12,419
Housing units12,670This ZIP12,670
Median age37.7This ZIP37.7California37.9US 38.9
Median household income$89,075This ZIP$89,075California$99,122US $80,734
Median home value$761,000This ZIP$761,000California$734,700US $332,700
Median gross rent$1,918This ZIP$1,918California$2,036US $1,413
Bachelor's degree or higher25.4%This ZIP25.4%
Mean commute29.3 minThis ZIP29.3 min
Population density9,027.2 / sq miThis ZIP9,027.2 / sq mi

Business and tax activity

Business establishments600This ZIP600
Employees16,330This ZIP16,330
Annual payroll$1,292,648,000This ZIP$1,292,648,000
Tax returns filed19,630This ZIP19,630
Total adjusted gross income$1,199,936,000This ZIP$1,199,936,000

Land area

Land area4.52 sq miThis ZIP4.52 sq mi
Water area0.02 sq miThis ZIP0.02 sq mi

Other place names in 90242

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

ZIP codes near 90242

ZIPCityDistance
90239 Downey, CA 1.3 mi
90241 Downey, CA 1.4 mi
90723 Paramount, CA 2.2 mi
90706 Bellflower, CA 2.5 mi
90240 Downey, CA 2.7 mi
90707 Bellflower, CA 3.1 mi
90280 South Gate, CA 3.4 mi
90650 Norwalk, CA 3.5 mi
90262 Lynwood, CA 3.5 mi
90671 Santa Fe Springs, CA 3.6 mi

Find every ZIP code within 10 miles of 90242 →

Questions about this ZIP code

Where is ZIP code 90242?

90242 is in Downey, California, in Los Angeles County, part of the Los Angeles-Long Beach-Anaheim, CA metropolitan area. Its published point location is 33.9218, -118.1406.

What county is 90242 in?

90242 lies in Los Angeles County.

What area code is 90242?

Downey uses area code 562, from NANPA's telephone records.

What time zone is 90242 in?

90242 uses America/Los_Angeles.

How many people live in 90242?

About 40,767 people live in ZIP code 90242, in 12,419 households, at 9,027.2 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 90242?

$89,075 a year, against $99,122 across California.

What ZIP codes are near 90242?

The closest are 90239 (1.3 mi), 90241 (1.4 mi), 90723 (2.2 mi), 90706 (2.5 mi) and 90240 (2.7 mi).

Is 90242 a PO Box ZIP code?

90242 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “90242 ZIP Code — Downey, California (Los Angeles County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/90242

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