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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/91342

91342

ZIP 91342 is in Sylmar, California, in Los Angeles County; area codes 818 and 747; Pacific time. Sylmar has 2 ZIP codes; the other is 91392.

Type
Standard
Time zone
America/Los_Angeles
County
Los Angeles
Population
93,301
Coordinates
34.3266, -118.3823
☼ Live from 91342 — Sylmar, CA

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Where 91342 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 91342
  • 🔢 Type 91342 into a pocket calculator and turn it upside down: ZhEIG — not quite a word, sorry.
  • ➕ As a number, 91,342 = 2 × 109 × 419. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110010011001110
  • 🏠 Its numerical neighbours: 91341 (San Fernando, CA, 4 mi away) and 91343 (North Hills, CA, 8 mi away).
  • 🔄 Backwards, 91342 becomes 24319 — and that is a real ZIP code: Chilhowie, VA, 2,059 miles away.
  • 👥 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, 2,446 miles away.
  • 🧭 Farther south than 77% of all ZIP codes, and farther west than 92%.
  • 🎯1,153 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 91342 and you would come out at 34.33°S, 61.62°E — 1,002 miles from Saint-Denis, Reunion, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 27m of daylight. Shortest: 9h 51m.
  • 📏 At 45.4 square miles of land, 91342 is bigger than 57% of ZIP codes — room for about 35 Central Parks.
🌙 The sky over 91342 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population93,301This ZIP93,301
Households25,537This ZIP25,537
Housing units26,533This ZIP26,533
Median age37.5This ZIP37.5California37.9US 38.9
Median household income$98,118This ZIP$98,118California$99,122US $80,734
Median home value$695,600This ZIP$695,600California$734,700US $332,700
Median gross rent$1,963This ZIP$1,963California$2,036US $1,413
Bachelor's degree or higher20.8%This ZIP20.8%
Mean commute31.2 minThis ZIP31.2 min
Population density2,053.1 / sq miThis ZIP2,053.1 / sq mi

Business and tax activity

Business establishments1,314This ZIP1,314
Employees22,754This ZIP22,754
Annual payroll$1,494,580,000This ZIP$1,494,580,000
Tax returns filed43,820This ZIP43,820
Total adjusted gross income$2,664,484,000This ZIP$2,664,484,000

Land area

Land area45.45 sq miThis ZIP45.45 sq mi
Water area0.03 sq miThis ZIP0.03 sq mi

Other place names in 91342

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

ZIP codes near 91342

ZIPCityDistance
91392 Sylmar, CA 4.0 mi
91340 San Fernando, CA 4.1 mi
91341 San Fernando, CA 4.5 mi
91333 Pacoima, CA 5.1 mi
91334 Pacoima, CA 5.1 mi
91387 Canyon Country, CA 5.4 mi
91331 Pacoima, CA 5.4 mi
91040 Sunland, CA 5.4 mi
91345 Mission Hills, CA 6.0 mi
91041 Sunland, CA 6.2 mi

Find every ZIP code within 10 miles of 91342 →

Questions about this ZIP code

Where is ZIP code 91342?

91342 is in Sylmar, California, in Los Angeles County, part of the Los Angeles-Long Beach-Anaheim, CA metropolitan area. Its published point location is 34.3266, -118.3823.

What county is 91342 in?

91342 lies in Los Angeles County.

What area code is 91342?

Sylmar uses area codes 818 and 747, from NANPA's telephone records.

What time zone is 91342 in?

91342 uses America/Los_Angeles.

How many people live in 91342?

About 93,301 people live in ZIP code 91342, in 25,537 households, at 2,053.1 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 91342?

$98,118 a year, against $99,122 across California.

What ZIP codes are near 91342?

The closest are 91392 (4 mi), 91340 (4.1 mi), 91341 (4.5 mi), 91333 (5.1 mi) and 91334 (5.1 mi).

Is 91342 a PO Box ZIP code?

91342 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “91342 ZIP Code — Sylmar, California (Los Angeles County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/91342

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