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/91355

91355

ZIP 91355 is in Valencia, California, in Los Angeles County; area code 661; Pacific time. Valencia has 3 ZIP codes; the others are 91354 and 91385.

Type
Standard
Time zone
America/Los_Angeles
County
Los Angeles
Population
29,123
Coordinates
34.4019, -118.5700
☼ Live from 91355 — Valencia, CA

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 91355 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 91355
  • 🔢 Type 91355 into a pocket calculator and turn it upside down: SSEIG — not quite a word, sorry.
  • ➕ As a number, 91,355 = 5 × 11 × 11 × 151. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110010011011011
  • 🏠 Its numerical neighbours: 91354 (Valencia, CA, 4 mi away) and 91356 (Tarzana, CA, 17 mi away).
  • 🔄 Backwards, 91355 becomes 55319 — and that is a real ZIP code: Clear Lake, MN, 1,503 miles away.
  • 👥 24 other ZIP codes are made of exactly the same digits (15359, 15539, 15935, 15953, 19355, 19535, …). The farthest-flung twin is 19355 in Malvern, PA, 2,377 miles away.
  • 🧭 Farther south than 77% of all ZIP codes, and farther west than 92%.
  • 🎯1,160 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 91355 and you would come out at 34.40°S, 61.43°E — 1,003 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 13.2 square miles of land, 91355 is bigger than 31% of ZIP codes — room for about 10.0 Central Parks.
🌙 The sky over 91355 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population29,123This ZIP29,123
Households11,781This ZIP11,781
Housing units12,235This ZIP12,235
Median age43.3This ZIP43.3California37.9US 38.9
Median household income$115,640This ZIP$115,640California$99,122US $80,734
Median home value$806,200This ZIP$806,200California$734,700US $332,700
Median gross rent$2,749This ZIP$2,749California$2,036US $1,413
Bachelor's degree or higher49.6%This ZIP49.6%
Mean commute29.8 minThis ZIP29.8 min
Population density2,213.3 / sq miThis ZIP2,213.3 / sq mi

Business and tax activity

Business establishments2,573This ZIP2,573
Employees55,015This ZIP55,015
Annual payroll$3,905,955,000This ZIP$3,905,955,000
Tax returns filed15,410This ZIP15,410
Total adjusted gross income$1,845,275,000This ZIP$1,845,275,000

Land area

Land area13.16 sq miThis ZIP13.16 sq mi
Water area0.27 sq miThis ZIP0.27 sq mi

Other place names in 91355

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

ZIP codes near 91355

ZIPCityDistance
91380 Santa Clarita, CA 1.7 mi
91382 Santa Clarita, CA 1.7 mi
91383 Santa Clarita, CA 1.7 mi
91322 Newhall, CA 2.5 mi
91381 Stevenson Ranch, CA 2.9 mi
91385 Valencia, CA 3.7 mi
91354 Valencia, CA 4.0 mi
91350 Santa Clarita, CA 4.3 mi
91321 Newhall, CA 5.4 mi
91386 Canyon Country, CA 5.8 mi

Find every ZIP code within 10 miles of 91355 →

Questions about this ZIP code

Where is ZIP code 91355?

91355 is in Valencia, California, in Los Angeles County, part of the Los Angeles-Long Beach-Anaheim, CA metropolitan area. Its published point location is 34.4019, -118.5700.

What county is 91355 in?

91355 lies in Los Angeles County.

What area code is 91355?

Valencia uses area code 661, from NANPA's telephone records.

What time zone is 91355 in?

91355 uses America/Los_Angeles.

How many people live in 91355?

About 29,123 people live in ZIP code 91355, in 11,781 households, at 2,213.3 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 91355?

$115,640 a year, against $99,122 across California.

What ZIP codes are near 91355?

The closest are 91380 (1.7 mi), 91382 (1.7 mi), 91383 (1.7 mi), 91322 (2.5 mi) and 91381 (2.9 mi).

Is 91355 a PO Box ZIP code?

91355 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “91355 ZIP Code — Valencia, California (Los Angeles County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/91355

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/91355.json

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