91801
ZIP 91801 is in Alhambra, California, in Los Angeles County; area code 626; Pacific time. Alhambra has 6 ZIP codes; the others are 91802, 91803, 91804, 91896 and 91899.
- Type
- Standard
- Time zone
- America/Los_Angeles
- County
- Los Angeles
- Metro area
- Los Angeles-Long Beach-Anaheim, CA
- Population
- 53,381
- Coordinates
- 34.0909, -118.1278
Weather right now
Asking the National Weather Service…
Where 91801 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.
- 🔢 Type 91801 into a pocket calculator and turn it upside down: IOBIG — not quite a word, sorry.
- ➕ 91801 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 19, a total 2,454 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10110011010011001 - 🏠 Its numerical neighbours: 91793 (West Covina, CA, 11 mi away) and 91802 (Alhambra, CA, 0 mi away).
- 🔄 Backwards, 91801 becomes 10819, which is not a ZIP code at all.
- 👥 23 other ZIP codes are made of exactly the same digits (09811, 10918, 10981, 11980, 18091, 18109, …). The farthest-flung twin is 09811 in APO AE, a military post office, 8,314 miles away.
- 🧭 Farther south than 78% 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 91801 and you would come out at 34.09°S, 61.87°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 53m.
- 📏 At 4.3 square miles of land, 91801 is bigger than 17% of ZIP codes — room for about 3.3 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 53,381This ZIP53,381 |
|---|---|
| Households | 20,415This ZIP20,415 |
| Housing units | 22,069This ZIP22,069 |
| Median age | 41.5This ZIP41.5California37.9US 38.9 |
| Median household income | $89,156This ZIP$89,156California$99,122US $80,734 |
| Median home value | $834,000This ZIP$834,000California$734,700US $332,700 |
| Median gross rent | $1,981This ZIP$1,981California$2,036US $1,413 |
| Bachelor's degree or higher | 42.0%This ZIP42.0% |
| Mean commute | 30.4 minThis ZIP30.4 min |
| Population density | 12,345.3 / sq miThis ZIP12,345.3 / sq mi |
Business and tax activity
| Business establishments | 1,493This ZIP1,493 |
|---|---|
| Employees | 13,300This ZIP13,300 |
| Annual payroll | $679,339,000This ZIP$679,339,000 |
| Tax returns filed | 25,830This ZIP25,830 |
| Total adjusted gross income | $1,819,211,000This ZIP$1,819,211,000 |
Land area
| Land area | 4.32 sq miThis ZIP4.32 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 91801
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 91801
| ZIP | City | Distance |
|---|---|---|
91802 | Alhambra, CA | 0.3 mi |
91804 | Alhambra, CA | 0.3 mi |
91896 | Alhambra, CA | 0.3 mi |
91899 | Alhambra, CA | 0.3 mi |
91778 | San Gabriel, CA | 1.3 mi |
91803 | Alhambra, CA | 1.5 mi |
91776 | San Gabriel, CA | 1.9 mi |
91756 | Monterey Park, CA | 2.0 mi |
91030 | South Pasadena, CA | 2.1 mi |
91031 | South Pasadena, CA | 2.2 mi |
Find every ZIP code within 10 miles of 91801 →
Questions about this ZIP code
Where is ZIP code 91801?
91801 is in Alhambra, California, in Los Angeles County, part of the Los Angeles-Long Beach-Anaheim, CA metropolitan area. Its published point location is 34.0909, -118.1278.
What county is 91801 in?
91801 lies in Los Angeles County.
What area code is 91801?
Alhambra uses area code 626, from NANPA's telephone records.
What time zone is 91801 in?
91801 uses America/Los_Angeles.
How many people live in 91801?
About 53,381 people live in ZIP code 91801, in 20,415 households, at 12,345.3 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 91801?
$89,156 a year, against $99,122 across California.
What ZIP codes are near 91801?
The closest are 91802 (0.3 mi), 91804 (0.3 mi), 91896 (0.3 mi), 91899 (0.3 mi) and 91778 (1.3 mi).
Is 91801 a PO Box ZIP code?
91801 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “91801 ZIP Code — Alhambra, California (Los Angeles County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/91801
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/91801.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.