Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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/90638

90638

ZIP 90638 is in La Mirada, California, mostly in Los Angeles County; Pacific time. La Mirada has 3 ZIP codes; the others are 90637 and 90639.

Type
Standard
Time zone
America/Los_Angeles
County
Los Angeles +1 more
Population
45,933
Coordinates
33.9020, -118.0090
☼ Live from 90638 — La Mirada, CA

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 90638 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 90638
  • 🔢 Type 90638 into a pocket calculator and turn it upside down: BEgOG — not quite a word, sorry.
  • ➕ As a number, 90,638 = 2 × 45319. Its digits add up to 26, a total 2,038 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110001000001110
  • 🏠 Its numerical neighbours: 90637 (La Mirada, CA, 1 mi away) and 90639 (La Mirada, CA, 0 mi away).
  • 🔄 Backwards, 90638 becomes 83609, which is not a ZIP code at all.
  • 👥 29 other ZIP codes are made of exactly the same digits (03869, 03896, 06389, 09683, 09836, 36089, …). The farthest-flung twin is 09683 in APO AE, a military post office, 8,206 miles away.
  • 🧭 Farther south than 80% of all ZIP codes, and farther west than 91%.
  • 🎯1,146 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 90638 and you would come out at 33.90°S, 61.99°E — 984 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 7.8 square miles of land, 90638 is bigger than 24% of ZIP codes — room for about 5.9 Central Parks.
🌙 The sky over 90638 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population45,933This ZIP45,933
Households15,421This ZIP15,421
Housing units15,818This ZIP15,818
Median age44.2This ZIP44.2California37.9US 38.9
Median household income$109,649This ZIP$109,649California$99,122US $80,734
Median home value$827,300This ZIP$827,300California$734,700US $332,700
Median gross rent$2,217This ZIP$2,217California$2,036US $1,413
Bachelor's degree or higher40.9%This ZIP40.9%
Mean commute32.4 minThis ZIP32.4 min
Population density5,926.8 / sq miThis ZIP5,926.8 / sq mi

Business and tax activity

Business establishments1,099This ZIP1,099
Employees17,603This ZIP17,603
Annual payroll$1,260,101,000This ZIP$1,260,101,000
Tax returns filed22,440This ZIP22,440
Total adjusted gross income$1,918,032,000This ZIP$1,918,032,000

Land area

Land area7.75 sq miThis ZIP7.75 sq mi
Water area0.02 sq miThis ZIP0.02 sq mi

Counties 90638 spans

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

CountyShare of this ZIP
Los Angeles County 99.1%
Orange County 0.9%

Other place names in 90638

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

ZIP codes near 90638

ZIPCityDistance
90639 La Mirada, CA 0.4 mi
90637 La Mirada, CA 1.1 mi
90604 Whittier, CA 1.8 mi
90621 Buena Park, CA 2.1 mi
90624 Buena Park, CA 3.0 mi
90603 Whittier, CA 3.1 mi
92833 Fullerton, CA 3.1 mi
90632 La Habra, CA 3.2 mi
92837 Fullerton, CA 3.5 mi
90605 Whittier, CA 3.6 mi

Find every ZIP code within 10 miles of 90638 →

Questions about this ZIP code

Where is ZIP code 90638?

90638 is in La Mirada, California, in Los Angeles County, part of the Los Angeles-Long Beach-Anaheim, CA metropolitan area. Its published point location is 33.9020, -118.0090.

What county is 90638 in?

90638 spans 2 counties: Los Angeles County and Orange County. Most of it falls in Los Angeles 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 90638 in?

90638 uses America/Los_Angeles.

How many people live in 90638?

About 45,933 people live in ZIP code 90638, in 15,421 households, at 5,926.8 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 90638?

$109,649 a year, against $99,122 across California.

What ZIP codes are near 90638?

The closest are 90639 (0.4 mi), 90637 (1.1 mi), 90604 (1.8 mi), 90621 (2.1 mi) and 90624 (3 mi).

Is 90638 a PO Box ZIP code?

90638 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “90638 ZIP Code — La Mirada, California (Los Angeles County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/90638

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/90638.json

Underlying data is public domain or openly licensed — sources, vintages and licences.