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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/94566

94566

ZIP 94566 is in Pleasanton, California, in Alameda County; area code 925; Pacific time. Pleasanton has 2 ZIP codes; the other is 94588.

Type
Standard
Time zone
America/Los_Angeles
County
Alameda
Population
44,222
Coordinates
37.6487, -121.8480
☼ Live from 94566 — Pleasanton, CA

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Local time: —

Where 94566 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 94566
  • 🔢 Type 94566 into a pocket calculator and turn it upside down: ggShG — not quite a word, sorry.
  • ➕ As a number, 94,566 = 2 × 3 × 15761. Its digits add up to 30, a total 1,024 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111000101100110
  • 🏠 Its numerical neighbours: 94565 (Pittsburg, CA, 25 mi away) and 94567 (Pope Valley, CA, 77 mi away).
  • 🔄 Backwards, 94566 becomes 66549 — and that is a real ZIP code: Westmoreland, KS, 1,374 miles away.
  • 👥 19 other ZIP codes are made of exactly the same digits (45669, 45696, 46965, 49656, 49665, 54669, …). The farthest-flung twin is 96546 in APO AA, a military post office, 7,948 miles away.
  • 🧭 Farther south than 60% of all ZIP codes, and farther west than 95%.
  • 🎯1,259 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 94566 and you would come out at 37.65°S, 58.15°E — 1,007 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 20.3 square miles of land, 94566 is bigger than 38% of ZIP codes — room for about 15 Central Parks.
🌙 The sky over 94566 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population44,222This ZIP44,222
Households15,921This ZIP15,921
Housing units16,724This ZIP16,724
Median age45.1This ZIP45.1California37.9US 38.9
Median household income$191,155This ZIP$191,155California$99,122US $80,734
Median home value$1,656,900This ZIP$1,656,900California$734,700US $332,700
Median gross rent$2,642This ZIP$2,642California$2,036US $1,413
Bachelor's degree or higher68.1%This ZIP68.1%
Mean commute33.1 minThis ZIP33.1 min
Population density2,176.2 / sq miThis ZIP2,176.2 / sq mi

Business and tax activity

Business establishments1,539This ZIP1,539
Employees16,027This ZIP16,027
Annual payroll$1,188,574,000This ZIP$1,188,574,000
Tax returns filed20,620This ZIP20,620
Total adjusted gross income$5,430,667,000This ZIP$5,430,667,000

Land area

Land area20.32 sq miThis ZIP20.32 sq mi
Water area0.51 sq miThis ZIP0.51 sq mi

Other place names in 94566

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

ZIP codes near 94566

ZIPCityDistance
94537 Fremont, CA 4.6 mi
94540 Hayward, CA 4.6 mi
94557 Hayward, CA 4.6 mi
94568 Dublin, CA 5.5 mi
94586 Sunol, CA 5.6 mi
94582 San Ramon, CA 8.9 mi
94551 Livermore, CA 8.9 mi
94536 Fremont, CA 9.1 mi
94552 Castro Valley, CA 9.6 mi
94542 Hayward, CA 9.7 mi

Find every ZIP code within 10 miles of 94566 →

Questions about this ZIP code

Where is ZIP code 94566?

94566 is in Pleasanton, California, in Alameda County, part of the San Francisco-Oakland-Fremont, CA metropolitan area. Its published point location is 37.6487, -121.8480.

What county is 94566 in?

94566 lies in Alameda County.

What area code is 94566?

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

What time zone is 94566 in?

94566 uses America/Los_Angeles.

How many people live in 94566?

About 44,222 people live in ZIP code 94566, in 15,921 households, at 2,176.2 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 94566?

$191,155 a year, against $99,122 across California.

What ZIP codes are near 94566?

The closest are 94537 (4.6 mi), 94540 (4.6 mi), 94557 (4.6 mi), 94568 (5.5 mi) and 94586 (5.6 mi).

Is 94566 a PO Box ZIP code?

94566 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “94566 ZIP Code — Pleasanton, California (Alameda County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/94566

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