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/94580

94580

ZIP 94580 is San Lorenzo, California, in Alameda County; area codes 510 and 341; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
Alameda
Population
29,420
Coordinates
37.6780, -122.1334
☼ Live from 94580 — San Lorenzo, CA

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 94580 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 94580
  • 🔢 Type 94580 into a pocket calculator and turn it upside down: OBShG — not quite a word, sorry.
  • ➕ As a number, 94,580 = 2 × 2 × 5 × 4729. Its digits add up to 26, a total 2,038 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111000101110100
  • 🏠 Its numerical neighbours: 94579 (San Leandro, CA, 1 mi away) and 94581 (Napa, CA, 44 mi away).
  • 🔄 Backwards, 94580 becomes 08549, which is not a ZIP code at all.
  • 👥 46 other ZIP codes are made of exactly the same digits (04859, 04958, 04985, 05489, 05849, 09845, …). The farthest-flung twin is 09845 in APO AE, a military post office, 6,767 miles away.
  • 🧭 Farther south than 60% of all ZIP codes, and farther west than 96%.
  • 🎯1,274 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 94580 and you would come out at 37.68°S, 57.87°E — 1,014 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 46m of daylight. Shortest: 9h 33m.
  • 📏 At 3.3 square miles of land, 94580 is bigger than 15% of ZIP codes — room for about 2.5 Central Parks.
🌙 The sky over 94580 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population29,420This ZIP29,420
Households8,992This ZIP8,992
Housing units9,207This ZIP9,207
Median age41.9This ZIP41.9California37.9US 38.9
Median household income$110,729This ZIP$110,729California$99,122US $80,734
Median home value$846,700This ZIP$846,700California$734,700US $332,700
Median gross rent$2,274This ZIP$2,274California$2,036US $1,413
Bachelor's degree or higher26.1%This ZIP26.1%
Mean commute32.8 minThis ZIP32.8 min
Population density8,856.1 / sq miThis ZIP8,856.1 / sq mi

Business and tax activity

Business establishments304This ZIP304
Employees3,718This ZIP3,718
Annual payroll$129,919,000This ZIP$129,919,000
Tax returns filed14,600This ZIP14,600
Total adjusted gross income$1,157,603,000This ZIP$1,157,603,000

Land area

Land area3.32 sq miThis ZIP3.32 sq mi
Water area0.00 sq mi

Other place names in 94580

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

ZIP codes near 94580

ZIPCityDistance
94579 San Leandro, CA 1.4 mi
94578 San Leandro, CA 2.0 mi
94541 Hayward, CA 2.5 mi
94543 Hayward, CA 2.9 mi
94577 San Leandro, CA 3.3 mi
94545 Hayward, CA 3.4 mi
94603 Oakland, CA 4.8 mi
94546 Castro Valley, CA 4.9 mi
94614 Oakland, CA 5.2 mi
94544 Hayward, CA 5.2 mi

Find every ZIP code within 10 miles of 94580 →

Questions about this ZIP code

Where is ZIP code 94580?

94580 is in San Lorenzo, California, in Alameda County, part of the San Francisco-Oakland-Fremont, CA metropolitan area. Its published point location is 37.6780, -122.1334.

What county is 94580 in?

94580 lies in Alameda County.

What area code is 94580?

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

What time zone is 94580 in?

94580 uses America/Los_Angeles.

How many people live in 94580?

About 29,420 people live in ZIP code 94580, in 8,992 households, at 8,856.1 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 94580?

$110,729 a year, against $99,122 across California.

What ZIP codes are near 94580?

The closest are 94579 (1.4 mi), 94578 (2 mi), 94541 (2.5 mi), 94543 (2.9 mi) and 94577 (3.3 mi).

Is 94580 a PO Box ZIP code?

94580 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “94580 ZIP Code — San Lorenzo, California (Alameda County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/94580

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/94580.json

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