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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/90221

90221

ZIP 90221 is in Compton, California, in Los Angeles County; area codes 310, 424 and 562; Pacific time. Compton has 5 ZIP codes; the others are 90220, 90222, 90223 and 90224.

Type
Standard
Time zone
America/Los_Angeles
County
Los Angeles
Population
50,659
Coordinates
33.8858, -118.2065
☼ Live from 90221 — Compton, CA

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Local time: —

Where 90221 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 90221
  • 🔢 Type 90221 into a pocket calculator and turn it upside down: IZZOG — not quite a word, sorry.
  • ➕ As a number, 90,221 = 83 × 1087. Its digits add up to 14, a total 1,416 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110000001101101
  • 🏠 Its numerical neighbours: 90220 (Compton, CA, 1 mi away) and 90222 (Compton, CA, 3 mi away).
  • 🔄 Backwards, 90221 becomes 12209 — and that is a real ZIP code: Albany, NY, 2,455 miles away.
  • 👥 36 other ZIP codes are made of exactly the same digits (01229, 01922, 02129, 02912, 02921, 09212, …). The farthest-flung twin is 09212 in APO AE, a military post office, 5,794 miles away.
  • 🧭 Farther south than 80% of all ZIP codes, and farther west than 91%.
  • 🎯1,157 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 90221 and you would come out at 33.89°S, 61.79°E — 979 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 5.4 square miles of land, 90221 is bigger than 20% of ZIP codes — room for about 4.1 Central Parks.
🌙 The sky over 90221 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population50,659This ZIP50,659
Households12,398This ZIP12,398
Housing units12,878This ZIP12,878
Median age33.5This ZIP33.5California37.9US 38.9
Median household income$72,937This ZIP$72,937California$99,122US $80,734
Median home value$575,000This ZIP$575,000California$734,700US $332,700
Median gross rent$1,678This ZIP$1,678California$2,036US $1,413
Bachelor's degree or higher7.9%This ZIP7.9%
Mean commute30.0 minThis ZIP30.0 min
Population density9,414.4 / sq miThis ZIP9,414.4 / sq mi

Business and tax activity

Business establishments675This ZIP675
Employees13,435This ZIP13,435
Annual payroll$910,855,000This ZIP$910,855,000
Tax returns filed22,510This ZIP22,510
Total adjusted gross income$994,452,000This ZIP$994,452,000

Land area

Land area5.38 sq miThis ZIP5.38 sq mi
Water area0.07 sq miThis ZIP0.07 sq mi

Other place names in 90221

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

ZIP codes near 90221

ZIPCityDistance
90223 Compton, CA 1.0 mi
90220 Compton, CA 1.4 mi
90805 Long Beach, CA 2.1 mi
90723 Paramount, CA 2.5 mi
90222 Compton, CA 2.6 mi
90262 Lynwood, CA 2.6 mi
90747 Carson, CA 3.0 mi
90746 Carson, CA 3.2 mi
90895 Carson, CA 3.3 mi
90059 Los Angeles, CA 3.8 mi

Find every ZIP code within 10 miles of 90221 →

Questions about this ZIP code

Where is ZIP code 90221?

90221 is in Compton, California, in Los Angeles County, part of the Los Angeles-Long Beach-Anaheim, CA metropolitan area. Its published point location is 33.8858, -118.2065.

What county is 90221 in?

90221 lies in Los Angeles County.

What area code is 90221?

Compton uses area codes 310, 424 and 562, from NANPA's telephone records.

What time zone is 90221 in?

90221 uses America/Los_Angeles.

How many people live in 90221?

About 50,659 people live in ZIP code 90221, in 12,398 households, at 9,414.4 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 90221?

$72,937 a year, against $99,122 across California.

What ZIP codes are near 90221?

The closest are 90223 (1 mi), 90220 (1.4 mi), 90805 (2.1 mi), 90723 (2.5 mi) and 90222 (2.6 mi).

Is 90221 a PO Box ZIP code?

90221 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “90221 ZIP Code — Compton, California (Los Angeles County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/90221

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