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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/91423

91423

ZIP 91423 is in Sherman Oaks, California, in Los Angeles County; Pacific time. Sherman Oaks has 4 ZIP codes; the others are 91403, 91413 and 91495.

Type
Standard
Time zone
America/Los_Angeles
County
Los Angeles
Population
32,328
Coordinates
34.1495, -118.4319
☼ Live from 91423 — Sherman Oaks, CA

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Where 91423 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 91423
  • 🔢 Type 91423 into a pocket calculator and turn it upside down: EZhIG — not quite a word, sorry.
  • ➕ 91423 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110010100011111
  • 🏠 Its numerical neighbours: 91416 (Encino, CA, 4 mi away) and 91426 (Encino, CA, 4 mi away).
  • 🔄 Backwards, 91423 becomes 32419, which is not a ZIP code at all.
  • 👥 41 other ZIP codes are made of exactly the same digits (12439, 12493, 12934, 12943, 13492, 19342, …). The farthest-flung twin is 12934 in Ellenburg Center, NY, 2,454 miles away.
  • 🧭 Farther south than 78% of all ZIP codes, and farther west than 92%.
  • 🎯1,161 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 91423 and you would come out at 34.15°S, 61.57°E — 990 miles from Saint-Denis, Reunion, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 26m of daylight. Shortest: 9h 52m.
  • 📏 At 4.1 square miles of land, 91423 is bigger than 17% of ZIP codes — room for about 3.1 Central Parks.
🌙 The sky over 91423 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population32,328This ZIP32,328
Households15,748This ZIP15,748
Housing units16,782This ZIP16,782
Median age41.2This ZIP41.2California37.9US 38.9
Median household income$109,461This ZIP$109,461California$99,122US $80,734
Median home value$1,430,800This ZIP$1,430,800California$734,700US $332,700
Median gross rent$2,277This ZIP$2,277California$2,036US $1,413
Bachelor's degree or higher64.0%This ZIP64.0%
Mean commute31.9 minThis ZIP31.9 min
Population density7,958.6 / sq miThis ZIP7,958.6 / sq mi

Business and tax activity

Business establishments2,064This ZIP2,064
Employees12,426This ZIP12,426
Annual payroll$716,524,000This ZIP$716,524,000
Tax returns filed16,840This ZIP16,840
Total adjusted gross income$2,896,104,000This ZIP$2,896,104,000

Land area

Land area4.06 sq miThis ZIP4.06 sq mi
Water area0.02 sq miThis ZIP0.02 sq mi

Other place names in 91423

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

ZIP codes near 91423

ZIPCityDistance
91413 Sherman Oaks, CA 1.0 mi
91495 Sherman Oaks, CA 1.0 mi
91403 Sherman Oaks, CA 1.9 mi
91401 Van Nuys, CA 2.0 mi
91614 Studio City, CA 2.0 mi
91607 Valley Village, CA 2.2 mi
91604 Studio City, CA 2.2 mi
91617 Valley Village, CA 2.3 mi
91411 Van Nuys, CA 2.6 mi
91404 Van Nuys, CA 2.8 mi

Find every ZIP code within 10 miles of 91423 →

Questions about this ZIP code

Where is ZIP code 91423?

91423 is in Sherman Oaks, California, in Los Angeles County, part of the Los Angeles-Long Beach-Anaheim, CA metropolitan area. Its published point location is 34.1495, -118.4319.

What county is 91423 in?

91423 lies in Los Angeles County.

What time zone is 91423 in?

91423 uses America/Los_Angeles.

How many people live in 91423?

About 32,328 people live in ZIP code 91423, in 15,748 households, at 7,958.6 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 91423?

$109,461 a year, against $99,122 across California.

What ZIP codes are near 91423?

The closest are 91413 (1 mi), 91495 (1 mi), 91403 (1.9 mi), 91401 (2 mi) and 91614 (2 mi).

Is 91423 a PO Box ZIP code?

91423 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “91423 ZIP Code — Sherman Oaks, California (Los Angeles County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/91423

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