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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/90621

90621

ZIP 90621 is in Buena Park, California, in Orange County; area codes 714 and 657; Pacific time. Buena Park has 4 ZIP codes; the others are 90620, 90622 and 90624.

Type
Standard
Time zone
America/Los_Angeles
County
Orange
Population
35,984
Coordinates
33.8742, -117.9934
☼ Live from 90621 — Buena Park, CA

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Local time: —

Where 90621 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 90621
  • 🔢 Type 90621 into a pocket calculator and turn it upside down: IZgOG — not quite a word, sorry.
  • ➕ As a number, 90,621 = 3 × 3 × 10069. Its digits add up to 18, a total 2,332 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110000111111101
  • 🏠 Its numerical neighbours: 90620 (Buena Park, CA, 2 mi away) and 90622 (Buena Park, CA, 2 mi away).
  • 🔄 Backwards, 90621 becomes 12609, which is not a ZIP code at all.
  • 👥 54 other ZIP codes are made of exactly the same digits (02169, 02196, 02916, 06129, 06912, 06921, …). The farthest-flung twin is 09621 in FPO AE, a military post office, 6,447 miles away.
  • 🧭 Farther south than 80% of all ZIP codes, and farther west than 91%.
  • 🎯1,147 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 90621 and you would come out at 33.87°S, 62.01°E — 983 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 4.2 square miles of land, 90621 is bigger than 17% of ZIP codes — room for about 3.2 Central Parks.
🌙 The sky over 90621 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population35,984This ZIP35,984
Households10,977This ZIP10,977
Housing units11,240This ZIP11,240
Median age36.2This ZIP36.2California37.9US 38.9
Median household income$97,612This ZIP$97,612California$99,122US $80,734
Median home value$832,000This ZIP$832,000California$734,700US $332,700
Median gross rent$2,167This ZIP$2,167California$2,036US $1,413
Bachelor's degree or higher32.7%This ZIP32.7%
Mean commute29.5 minThis ZIP29.5 min
Population density8,584.0 / sq miThis ZIP8,584.0 / sq mi

Business and tax activity

Business establishments1,170This ZIP1,170
Employees11,275This ZIP11,275
Annual payroll$702,974,000This ZIP$702,974,000
Tax returns filed16,930This ZIP16,930
Total adjusted gross income$1,156,492,000This ZIP$1,156,492,000

Land area

Land area4.19 sq miThis ZIP4.19 sq mi
Water area0.02 sq miThis ZIP0.02 sq mi

Other place names in 90621

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

ZIP codes near 90621

ZIPCityDistance
90624 Buena Park, CA 1.2 mi
92837 Fullerton, CA 1.9 mi
92833 Fullerton, CA 1.9 mi
90622 Buena Park, CA 2.0 mi
90638 La Mirada, CA 2.1 mi
90620 Buena Park, CA 2.4 mi
90639 La Mirada, CA 2.5 mi
92850 Anaheim, CA 3.0 mi
92801 Anaheim, CA 3.1 mi
90623 La Palma, CA 3.1 mi

Find every ZIP code within 10 miles of 90621 →

Questions about this ZIP code

Where is ZIP code 90621?

90621 is in Buena Park, California, in Orange County, part of the Los Angeles-Long Beach-Anaheim, CA metropolitan area. Its published point location is 33.8742, -117.9934.

What county is 90621 in?

90621 lies in Orange County.

What area code is 90621?

Buena Park uses area codes 714 and 657, from NANPA's telephone records.

What time zone is 90621 in?

90621 uses America/Los_Angeles.

How many people live in 90621?

About 35,984 people live in ZIP code 90621, in 10,977 households, at 8,584.0 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 90621?

$97,612 a year, against $99,122 across California.

What ZIP codes are near 90621?

The closest are 90624 (1.2 mi), 92837 (1.9 mi), 92833 (1.9 mi), 90622 (2 mi) and 90638 (2.1 mi).

Is 90621 a PO Box ZIP code?

90621 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “90621 ZIP Code — Buena Park, California (Orange County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/90621

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/90621.json

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