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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/91024

91024

ZIP 91024 is in Sierra Madre, California, in Los Angeles County; area code 626; Pacific time. Sierra Madre has 2 ZIP codes; the other is 91025.

Type
Standard
Time zone
America/Los_Angeles
County
Los Angeles
Population
10,940
Coordinates
34.1753, -118.0460
☼ Live from 91024 — Sierra Madre, CA

Weather right now

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Local time: —

Where 91024 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 91024
  • 🔢 Type 91024 into a pocket calculator and turn it upside down: hZOIG — not quite a word, sorry.
  • ➕ As a number, 91,024 = 2 × 2 × 2 × 2 × 5689. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110001110010000
  • 🏠 Its numerical neighbours: 91023 (Mount Wilson, CA, 4 mi away) and 91025 (Sierra Madre, CA, 1 mi away).
  • 🔄 Backwards, 91024 becomes 42019, which is not a ZIP code at all.
  • 👥 56 other ZIP codes are made of exactly the same digits (02149, 02914, 04219, 04291, 04912, 04921, …). The farthest-flung twin is 09142 in APO AE, a military post office, 5,877 miles away.
  • 🧭 Farther south than 78% of all ZIP codes, and farther west than 91%.
  • 🎯1,140 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 91024 and you would come out at 34.18°S, 61.95°E — 1,001 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 3.5 square miles of land, 91024 is bigger than 16% of ZIP codes — room for about 2.7 Central Parks.
🌙 The sky over 91024 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population10,940This ZIP10,940
Households4,620This ZIP4,620
Housing units4,977This ZIP4,977
Median age44.8This ZIP44.8California37.9US 38.9
Median household income$143,547This ZIP$143,547California$99,122US $80,734
Median home value$1,226,800This ZIP$1,226,800California$734,700US $332,700
Median gross rent$2,198This ZIP$2,198California$2,036US $1,413
Bachelor's degree or higher64.0%This ZIP64.0%
Mean commute27.9 minThis ZIP27.9 min
Population density3,130.2 / sq miThis ZIP3,130.2 / sq mi

Business and tax activity

Business establishments352This ZIP352
Employees2,210This ZIP2,210
Annual payroll$99,135,000This ZIP$99,135,000
Tax returns filed5,490This ZIP5,490
Total adjusted gross income$902,593,000This ZIP$902,593,000

Land area

Land area3.50 sq miThis ZIP3.50 sq mi
Water area0.00 sq miThis ZIP0.00 sq mi

Other place names in 91024

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

ZIP codes near 91024

ZIPCityDistance
91025 Sierra Madre, CA 1.0 mi
91066 Arcadia, CA 2.5 mi
91077 Arcadia, CA 2.5 mi
91107 Pasadena, CA 2.6 mi
91006 Arcadia, CA 3.0 mi
91016 Monrovia, CA 3.0 mi
91007 Arcadia, CA 3.2 mi
91017 Monrovia, CA 3.3 mi
91023 Mount Wilson, CA 3.7 mi
91104 Pasadena, CA 4.5 mi

Find every ZIP code within 10 miles of 91024 →

Questions about this ZIP code

Where is ZIP code 91024?

91024 is in Sierra Madre, California, in Los Angeles County, part of the Los Angeles-Long Beach-Anaheim, CA metropolitan area. Its published point location is 34.1753, -118.0460.

What county is 91024 in?

91024 lies in Los Angeles County.

What area code is 91024?

Sierra Madre uses area code 626, from NANPA's telephone records.

What time zone is 91024 in?

91024 uses America/Los_Angeles.

How many people live in 91024?

About 10,940 people live in ZIP code 91024, in 4,620 households, at 3,130.2 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 91024?

$143,547 a year, against $99,122 across California.

What ZIP codes are near 91024?

The closest are 91025 (1 mi), 91066 (2.5 mi), 91077 (2.5 mi), 91107 (2.6 mi) and 91006 (3 mi).

Is 91024 a PO Box ZIP code?

91024 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “91024 ZIP Code — Sierra Madre, California (Los Angeles County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/91024

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