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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/94550

94550

ZIP 94550 is in Livermore, California, mostly in Alameda County; area code 925; Pacific time. Livermore has 2 ZIP codes; the other is 94551.

Type
Standard
Time zone
America/Los_Angeles
County
Alameda +1 more
Population
49,873
Coordinates
37.5200, -121.5756
☼ Live from 94550 — Livermore, CA

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Local time: —

Where 94550 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 94550
  • 🔢 Type 94550 into a pocket calculator and turn it upside down: OSShG — not quite a word, sorry.
  • ➕ As a number, 94,550 = 2 × 5 × 5 × 31 × 61. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111000101010110
  • 🏠 Its numerical neighbours: 94549 (Lafayette, CA, 40 mi away) and 94551 (Livermore, CA, 19 mi away).
  • 🔄 Backwards, 94550 becomes 05549, which is not a ZIP code at all.
  • 👥 23 other ZIP codes are made of exactly the same digits (04955, 05459, 05495, 40955, 49055, 49505, …). The farthest-flung twin is 04955 in New Sharon, ME, 2,685 miles away.
  • 🧭 Farther south than 61% of all ZIP codes, and farther west than 95%.
  • 🎯1,247 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 94550 and you would come out at 37.52°S, 58.42°E — 1,006 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 45m of daylight. Shortest: 9h 34m.
  • 📏 At 272.0 square miles of land, 94550 is bigger than 94% of ZIP codes — room for about 206 Central Parks.
🌙 The sky over 94550 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population49,873This ZIP49,873
Households17,564This ZIP17,564
Housing units18,443This ZIP18,443
Median age42.3This ZIP42.3California37.9US 38.9
Median household income$180,295This ZIP$180,295California$99,122US $80,734
Median home value$1,202,500This ZIP$1,202,500California$734,700US $332,700
Median gross rent$2,646This ZIP$2,646California$2,036US $1,413
Bachelor's degree or higher55.7%This ZIP55.7%
Mean commute28.9 minThis ZIP28.9 min
Population density183.4 / sq miThis ZIP183.4 / sq mi

Business and tax activity

Business establishments1,278This ZIP1,278
Employees25,430This ZIP25,430
Annual payroll$2,473,570,000This ZIP$2,473,570,000
Tax returns filed23,340This ZIP23,340
Total adjusted gross income$4,201,988,000This ZIP$4,201,988,000

Land area

Land area271.98 sq miThis ZIP271.98 sq mi
Water area1.95 sq miThis ZIP1.95 sq mi

Counties 94550 spans

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

CountyShare of this ZIP
Alameda County 61.2%
Santa Clara County 38.8%

Other place names in 94550

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

ZIP codes near 94550

ZIPCityDistance
95377 Tracy, CA 11.1 mi
95140 Mount Hamilton, CA 12.2 mi
95378 Tracy, CA 13.3 mi
95132 San Jose, CA 13.6 mi
95304 Tracy, CA 15.4 mi
95127 San Jose, CA 15.5 mi
94586 Sunol, CA 15.5 mi
95376 Tracy, CA 16.9 mi
95152 San Jose, CA 17.0 mi
95148 San Jose, CA 17.1 mi

Find every ZIP code within 10 miles of 94550 →

Questions about this ZIP code

Where is ZIP code 94550?

94550 is in Livermore, California, in Alameda County, part of the San Francisco-Oakland-Fremont, CA metropolitan area. Its published point location is 37.5200, -121.5756.

What county is 94550 in?

94550 spans 2 counties: Alameda County and Santa Clara 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 94550?

Livermore uses area code 925, from NANPA's telephone records.

What time zone is 94550 in?

94550 uses America/Los_Angeles.

How many people live in 94550?

About 49,873 people live in ZIP code 94550, in 17,564 households, at 183.4 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 94550?

$180,295 a year, against $99,122 across California.

What ZIP codes are near 94550?

The closest are 95377 (11.1 mi), 95140 (12.2 mi), 95378 (13.3 mi), 95132 (13.6 mi) and 95304 (15.4 mi).

Is 94550 a PO Box ZIP code?

94550 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “94550 ZIP Code — Livermore, California (Alameda County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/94550

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