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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/91204

91204

ZIP 91204 is in Glendale, California, in Los Angeles County; area codes 818 and 747; Pacific time. Glendale has 14 ZIP codes in all.

Type
Standard
Time zone
America/Los_Angeles
County
Los Angeles
Population
17,857
Coordinates
34.1356, -118.2609
☼ Live from 91204 — Glendale, CA

Weather right now

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NEXRAD radar
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Local time: —

Where 91204 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 91204
  • 🔢 Type 91204 into a pocket calculator and turn it upside down: hOZIG — not quite a word, sorry.
  • ➕ As a number, 91,204 = 2 × 2 × 151 × 151. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110010001000100
  • 🏠 Its numerical neighbours: 91203 (Glendale, CA, 1 mi away) and 91205 (Glendale, CA, 1 mi away).
  • 🔄 Backwards, 91204 becomes 40219 — and that is a real ZIP code: Louisville, KY, 1,829 miles away.
  • 👥 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, 5,885 miles away.
  • 🧭 Farther south than 78% of all ZIP codes, and farther west than 92%.
  • 🎯1,152 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 91204 and you would come out at 34.14°S, 61.74°E — 993 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 1.0 square miles of land, 91204 is bigger than 8% of ZIP codes — about 505 football fields.
🌙 The sky over 91204 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population17,857This ZIP17,857
Households6,693This ZIP6,693
Housing units6,983This ZIP6,983
Median age37.0This ZIP37.0California37.9US 38.9
Median household income$74,144This ZIP$74,144California$99,122US $80,734
Median home value$726,500This ZIP$726,500California$734,700US $332,700
Median gross rent$2,105This ZIP$2,105California$2,036US $1,413
Bachelor's degree or higher38.5%This ZIP38.5%
Mean commute26.2 minThis ZIP26.2 min
Population density17,104.4 / sq miThis ZIP17,104.4 / sq mi

Business and tax activity

Business establishments1,022This ZIP1,022
Employees11,402This ZIP11,402
Annual payroll$696,272,000This ZIP$696,272,000
Tax returns filed7,160This ZIP7,160
Total adjusted gross income$479,463,000This ZIP$479,463,000

Land area

Land area1.04 sq miThis ZIP1.04 sq mi
Water area0.00 sq mi

Other place names in 91204

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

ZIP codes near 91204

ZIPCityDistance
91209 Glendale, CA 0.6 mi
91221 Glendale, CA 0.6 mi
91222 Glendale, CA 0.6 mi
91225 Glendale, CA 0.6 mi
91226 Glendale, CA 0.6 mi
91210 Glendale, CA 0.6 mi
91205 Glendale, CA 0.9 mi
91203 Glendale, CA 1.2 mi
90039 Los Angeles, CA 1.6 mi
90027 Los Angeles, CA 2.1 mi

Find every ZIP code within 10 miles of 91204 →

Questions about this ZIP code

Where is ZIP code 91204?

91204 is in Glendale, California, in Los Angeles County, part of the Los Angeles-Long Beach-Anaheim, CA metropolitan area. Its published point location is 34.1356, -118.2609.

What county is 91204 in?

91204 lies in Los Angeles County.

What area code is 91204?

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

What time zone is 91204 in?

91204 uses America/Los_Angeles.

How many people live in 91204?

About 17,857 people live in ZIP code 91204, in 6,693 households, at 17,104.4 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 91204?

$74,144 a year, against $99,122 across California.

What ZIP codes are near 91204?

The closest are 91209 (0.6 mi), 91221 (0.6 mi), 91222 (0.6 mi), 91225 (0.6 mi) and 91226 (0.6 mi).

Is 91204 a PO Box ZIP code?

91204 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “91204 ZIP Code — Glendale, California (Los Angeles County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/91204

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