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/91011

91011

ZIP 91011 is in La Canada Flintridge, California, in Los Angeles County; Pacific time. La Canada Flintridge has 2 ZIP codes; the other is 91012.

Type
Standard
Time zone
America/Los_Angeles
County
Los Angeles
Population
19,935
Coordinates
34.2179, -118.2023
☼ Live from 91011 — La Canada Flintridge, CA

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 91011 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 91011
  • 🔢 Type 91011 into a pocket calculator and turn it upside down: IIOIG — not quite a word, sorry.
  • ➕ As a number, 91,011 = 3 × 23 × 1319. Its digits add up to 12, a total 940 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110001110000011
  • 🏠 Its numerical neighbours: 91010 (Duarte, CA, 15 mi away) and 91012 (La Canada Flintridge, CA, 2 mi away).
  • 🔄 Backwards, 91011 becomes 11019, which is not a ZIP code at all.
  • 👥 10 other ZIP codes are made of exactly the same digits (01119, 09111, 10119, 10911, 11109, 11901, …). The farthest-flung twin is 09111 in APO AE, a military post office, 5,759 miles away.
  • 🧭 Farther south than 77% 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 91011 and you would come out at 34.22°S, 61.80°E — 999 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 11.3 square miles of land, 91011 is bigger than 29% of ZIP codes — room for about 8.5 Central Parks.
🌙 The sky over 91011 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population19,935This ZIP19,935
Households6,367This ZIP6,367
Housing units7,053This ZIP7,053
Median age44.6This ZIP44.6California37.9US 38.9
Median household income$241,875This ZIP$241,875California$99,122US $80,734
Median home value$2,000,000+This ZIP$2,000,000+California$734,700US $332,700
Median gross rent$2,873This ZIP$2,873California$2,036US $1,413
Bachelor's degree or higher75.1%This ZIP75.1%
Mean commute29.5 minThis ZIP29.5 min
Population density1,770.3 / sq miThis ZIP1,770.3 / sq mi

Business and tax activity

Business establishments905This ZIP905
Employees5,890This ZIP5,890
Annual payroll$337,716,000This ZIP$337,716,000
Tax returns filed9,460This ZIP9,460
Total adjusted gross income$3,432,927,000This ZIP$3,432,927,000

Land area

Land area11.26 sq miThis ZIP11.26 sq mi
Water area0.02 sq miThis ZIP0.02 sq mi

Other place names in 91011

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

ZIP codes near 91011

ZIPCityDistance
91021 Montrose, CA 1.5 mi
91012 La Canada Flintridge, CA 1.5 mi
91020 Montrose, CA 1.7 mi
91224 La Crescenta, CA 2.2 mi
91046 Verdugo City, CA 2.3 mi
91214 La Crescenta, CA 2.8 mi
91208 Glendale, CA 3.1 mi
91001 Altadena, CA 4.0 mi
91206 Glendale, CA 4.0 mi
91103 Pasadena, CA 4.1 mi

Find every ZIP code within 10 miles of 91011 →

Questions about this ZIP code

Where is ZIP code 91011?

91011 is in La Canada Flintridge, California, in Los Angeles County, part of the Los Angeles-Long Beach-Anaheim, CA metropolitan area. Its published point location is 34.2179, -118.2023.

What county is 91011 in?

91011 lies in Los Angeles County.

What time zone is 91011 in?

91011 uses America/Los_Angeles.

How many people live in 91011?

About 19,935 people live in ZIP code 91011, in 6,367 households, at 1,770.3 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 91011?

$241,875 a year, against $99,122 across California.

What ZIP codes are near 91011?

The closest are 91021 (1.5 mi), 91012 (1.5 mi), 91020 (1.7 mi), 91224 (2.2 mi) and 91046 (2.3 mi).

Is 91011 a PO Box ZIP code?

91011 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “91011 ZIP Code — La Canada Flintridge, California (Los Angeles County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/91011

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/91011.json

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