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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/91030

91030

ZIP 91030 is in South Pasadena, California, in Los Angeles County; Pacific time. South Pasadena has 2 ZIP codes; the other is 91031.

Type
Standard
Time zone
America/Los_Angeles
County
Los Angeles
Population
26,068
Coordinates
34.1090, -118.1566
☼ Live from 91030 — South Pasadena, CA

Weather right now

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NEXRAD radar
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Local time: —

Where 91030 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 91030
  • 🔢 Type 91030 into a pocket calculator and turn it upside down: OEOIG — not quite a word, sorry.
  • ➕ As a number, 91,030 = 2 × 5 × 9103. Its digits add up to 13, a total 1,179 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110001110010110
  • 🏠 Its numerical neighbours: 91025 (Sierra Madre, CA, 7 mi away) and 91031 (South Pasadena, CA, 1 mi away).
  • 🔄 Backwards, 91030 becomes 03019, which is not a ZIP code at all.
  • 👥 31 other ZIP codes are made of exactly the same digits (00913, 00931, 01039, 01093, 01903, 01930, …). The farthest-flung twin is 09031 in APO AE, a military post office, 5,837 miles away.
  • 🧭 Farther south than 78% of all ZIP codes, and farther west than 91%.
  • 🎯1,148 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 91030 and you would come out at 34.11°S, 61.84°E — 994 miles from Saint-Denis, Reunion, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 26m of daylight. Shortest: 9h 53m.
  • 📏 At 3.4 square miles of land, 91030 is bigger than 15% of ZIP codes — room for about 2.6 Central Parks.
🌙 The sky over 91030 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population26,068This ZIP26,068
Households10,220This ZIP10,220
Housing units10,817This ZIP10,817
Median age40.5This ZIP40.5California37.9US 38.9
Median household income$127,175This ZIP$127,175California$99,122US $80,734
Median home value$1,640,000This ZIP$1,640,000California$734,700US $332,700
Median gross rent$2,284This ZIP$2,284California$2,036US $1,413
Bachelor's degree or higher73.5%This ZIP73.5%
Mean commute29.9 minThis ZIP29.9 min
Population density7,595.6 / sq miThis ZIP7,595.6 / sq mi

Business and tax activity

Business establishments1,018This ZIP1,018
Employees7,315This ZIP7,315
Annual payroll$362,576,000This ZIP$362,576,000
Tax returns filed12,550This ZIP12,550
Total adjusted gross income$2,180,460,000This ZIP$2,180,460,000

Land area

Land area3.43 sq miThis ZIP3.43 sq mi
Water area0.01 sq miThis ZIP0.01 sq mi

Other place names in 91030

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

ZIP codes near 91030

ZIPCityDistance
91031 South Pasadena, CA 0.6 mi
91802 Alhambra, CA 1.9 mi
91804 Alhambra, CA 1.9 mi
91896 Alhambra, CA 1.9 mi
91899 Alhambra, CA 1.9 mi
91801 Alhambra, CA 2.1 mi
90042 Los Angeles, CA 2.1 mi
91105 Pasadena, CA 2.2 mi
91803 Alhambra, CA 2.4 mi
91108 San Marino, CA 2.6 mi

Find every ZIP code within 10 miles of 91030 →

Questions about this ZIP code

Where is ZIP code 91030?

91030 is in South Pasadena, California, in Los Angeles County, part of the Los Angeles-Long Beach-Anaheim, CA metropolitan area. Its published point location is 34.1090, -118.1566.

What county is 91030 in?

91030 lies in Los Angeles County.

What time zone is 91030 in?

91030 uses America/Los_Angeles.

How many people live in 91030?

About 26,068 people live in ZIP code 91030, in 10,220 households, at 7,595.6 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 91030?

$127,175 a year, against $99,122 across California.

What ZIP codes are near 91030?

The closest are 91031 (0.6 mi), 91802 (1.9 mi), 91804 (1.9 mi), 91896 (1.9 mi) and 91899 (1.9 mi).

Is 91030 a PO Box ZIP code?

91030 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “91030 ZIP Code — South Pasadena, California (Los Angeles County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/91030

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