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/91077

91077

ZIP 91077 is in Arcadia, California, in Los Angeles County; area code 626; Pacific time. Arcadia has 4 ZIP codes; the others are 91006, 91007 and 91066.

Type
No street area
Time zone
America/Los_Angeles
County
Los Angeles
Coordinates
34.1397, -118.0353

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 91007, whose figures describe that area — not this ZIP code.

☼ Live from 91077 — Arcadia, CA

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Where 91077 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 91077
  • 🔢 Type 91077 into a pocket calculator and turn it upside down: LLOIG — not quite a word, sorry.
  • ➕ As a number, 91,077 = 3 × 7 × 4337. Its digits add up to 24, a total 2,425 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110001111000101
  • 🏠 Its numerical neighbours: 91066 (Arcadia, CA, 0 mi away) and 91101 (Pasadena, CA, 6 mi away).
  • 🔄 Backwards, 91077 becomes 77019 — and that is a real ZIP code: Houston, TX, 1,357 miles away.
  • 👥 25 other ZIP codes are made of exactly the same digits (07719, 09177, 09717, 10977, 17097, 17970, …). The farthest-flung twin is 09177 in APO AE, a military post office, 5,867 miles away.
  • 🧭 Farther south than 78% of all ZIP codes, and farther west than 91%.
  • 🎯1,141 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 91077 and you would come out at 34.14°S, 61.96°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.
🌙 The sky over 91077 today
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Source: USGS.

Land area

ZIP codes near 91077

ZIPCityDistance
91066 Arcadia, CA 0.0 mi
91006 Arcadia, CA 0.6 mi
91007 Arcadia, CA 1.1 mi
91025 Sierra Madre, CA 1.8 mi
91017 Monrovia, CA 2.2 mi
91016 Monrovia, CA 2.2 mi
91024 Sierra Madre, CA 2.5 mi
91780 Temple City, CA 2.9 mi
91107 Pasadena, CA 3.3 mi
91009 Duarte, CA 3.3 mi

Find every ZIP code within 10 miles of 91077 →

Questions about this ZIP code

Where is ZIP code 91077?

91077 is in Arcadia, California, in Los Angeles County, part of the Los Angeles-Long Beach-Anaheim, CA metropolitan area. Its published point location is 34.1397, -118.0353.

What county is 91077 in?

91077 lies in Los Angeles County.

What area code is 91077?

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

What time zone is 91077 in?

91077 uses America/Los_Angeles.

What ZIP codes are near 91077?

The closest are 91066 (0 mi), 91006 (0.6 mi), 91007 (1.1 mi), 91025 (1.8 mi) and 91017 (2.2 mi).

Is 91077 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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zipcodes.pro. “91077 ZIP Code — Arcadia, California (Los Angeles County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/91077

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