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/94501

94501

ZIP 94501 is in Alameda, California, mostly in Alameda County; area codes 510 and 341; Pacific time. Alameda has 2 ZIP codes; the other is 94502.

Type
Standard
Time zone
America/Los_Angeles
County
Alameda +1 more
Population
63,808
Coordinates
37.7747, -122.2781
☼ Live from 94501 — Alameda, CA

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 94501 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 94501
  • 🔢 Type 94501 into a pocket calculator and turn it upside down: IOShG — not quite a word, sorry.
  • ➕ As a number, 94,501 = 11 × 11 × 11 × 71. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111000100100101
  • 🏠 Its numerical neighbours: 94497 (San Mateo, CA, 17 mi away) and 94502 (Alameda, CA, 3 mi away).
  • 🔄 Backwards, 94501 becomes 10549 — and that is a real ZIP code: Mount Kisco, NY, 2,566 miles away.
  • 👥 52 other ZIP codes are made of exactly the same digits (01945, 04915, 04951, 05149, 05491, 09154, …). The farthest-flung twin is 09154 in APO AE, a military post office, 5,758 miles away.
  • 🧭 Farther south than 60% of all ZIP codes, and farther west than 96%.
  • 🎯1,280 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 94501 and you would come out at 37.77°S, 57.72°E — 1,013 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 47m of daylight. Shortest: 9h 33m.
  • 📏 At 7.9 square miles of land, 94501 is bigger than 24% of ZIP codes — room for about 6.0 Central Parks.
🌙 The sky over 94501 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population63,808This ZIP63,808
Households25,208This ZIP25,208
Housing units27,300This ZIP27,300
Median age40.4This ZIP40.4California37.9US 38.9
Median household income$127,906This ZIP$127,906California$99,122US $80,734
Median home value$1,250,300This ZIP$1,250,300California$734,700US $332,700
Median gross rent$2,437This ZIP$2,437California$2,036US $1,413
Bachelor's degree or higher59.0%This ZIP59.0%
Mean commute31.1 minThis ZIP31.1 min
Population density8,052.5 / sq miThis ZIP8,052.5 / sq mi

Business and tax activity

Business establishments1,629This ZIP1,629
Employees20,851This ZIP20,851
Annual payroll$1,724,975,000This ZIP$1,724,975,000
Tax returns filed30,900This ZIP30,900
Total adjusted gross income$4,216,787,000This ZIP$4,216,787,000

Land area

Land area7.92 sq miThis ZIP7.92 sq mi
Water area2.82 sq miThis ZIP2.82 sq mi

Counties 94501 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Alameda County 99.4%
San Francisco County 0.6%

Other place names in 94501

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

ZIP codes near 94501

ZIPCityDistance
94604 Oakland, CA 2.1 mi
94623 Oakland, CA 2.1 mi
94624 Oakland, CA 2.1 mi
94649 Oakland, CA 2.1 mi
94659 Oakland, CA 2.1 mi
94660 Oakland, CA 2.1 mi
94661 Oakland, CA 2.1 mi
94666 Oakland, CA 2.1 mi
94606 Oakland, CA 2.2 mi
94617 Oakland, CA 2.3 mi

Find every ZIP code within 10 miles of 94501 →

Questions about this ZIP code

Where is ZIP code 94501?

94501 is in Alameda, California, in Alameda County, part of the San Francisco-Oakland-Fremont, CA metropolitan area. Its published point location is 37.7747, -122.2781.

What county is 94501 in?

94501 spans 2 counties: Alameda County and San Francisco County. Most of it falls in Alameda County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 94501?

Alameda uses area codes 510 and 341, from NANPA's telephone records.

What time zone is 94501 in?

94501 uses America/Los_Angeles.

How many people live in 94501?

About 63,808 people live in ZIP code 94501, in 25,208 households, at 8,052.5 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 94501?

$127,906 a year, against $99,122 across California.

What ZIP codes are near 94501?

The closest are 94604 (2.1 mi), 94623 (2.1 mi), 94624 (2.1 mi), 94649 (2.1 mi) and 94659 (2.1 mi).

Is 94501 a PO Box ZIP code?

94501 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “94501 ZIP Code — Alameda, California (Alameda County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/94501

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/94501.json

Underlying data is public domain or openly licensed — sources, vintages and licences.