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zipcodes.pro — ZIP/94583

94583

ZIP 94583 is in San Ramon, California, in Contra Costa County; area code 925; Pacific time. San Ramon has 2 ZIP codes; the other is 94582.

Type
Standard
Time zone
America/Los_Angeles
County
Contra Costa
Population
39,583
Coordinates
37.7717, -121.9898
☼ Live from 94583 — San Ramon, CA

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Where 94583 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 94583
  • 🔢 Type 94583 into a pocket calculator and turn it upside down: EBShG — not quite a word, sorry.
  • ➕ 94583 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 29, a total 1,296 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111000101110111
  • 🏠 Its numerical neighbours: 94582 (San Ramon, CA, 4 mi away) and 94585 (Suisun City, CA, 29 mi away).
  • 🔄 Backwards, 94583 becomes 38549 — and that is a real ZIP code: Byrdstown, TN, 2,017 miles away.
  • 👥 38 other ZIP codes are made of exactly the same digits (34958, 34985, 35894, 35984, 38459, 38549, …). The farthest-flung twin is 34958 in Jensen Beach, FL, 2,517 miles away.
  • 🧭 Farther south than 60% of all ZIP codes, and farther west than 95%.
  • 🎯1,265 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 94583 and you would come out at 37.77°S, 58.01°E — 1,004 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 21.2 square miles of land, 94583 is bigger than 38% of ZIP codes — room for about 16 Central Parks.
🌙 The sky over 94583 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population39,583This ZIP39,583
Households13,890This ZIP13,890
Housing units14,345This ZIP14,345
Median age40.8This ZIP40.8California37.9US 38.9
Median household income$184,898This ZIP$184,898California$99,122US $80,734
Median home value$1,383,600This ZIP$1,383,600California$734,700US $332,700
Median gross rent$3,019This ZIP$3,019California$2,036US $1,413
Bachelor's degree or higher64.9%This ZIP64.9%
Mean commute33.1 minThis ZIP33.1 min
Population density1,864.0 / sq miThis ZIP1,864.0 / sq mi

Business and tax activity

Business establishments2,090This ZIP2,090
Employees36,442This ZIP36,442
Annual payroll$4,426,504,000This ZIP$4,426,504,000
Tax returns filed20,110This ZIP20,110
Total adjusted gross income$5,495,786,000This ZIP$5,495,786,000

Land area

Land area21.24 sq miThis ZIP21.24 sq mi
Water area0.02 sq miThis ZIP0.02 sq mi

Other place names in 94583

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

ZIP codes near 94583

ZIPCityDistance
94570 Moraga, CA 1.9 mi
94526 Danville, CA 3.0 mi
94582 San Ramon, CA 4.1 mi
94552 Castro Valley, CA 4.7 mi
94528 Diablo, CA 5.1 mi
94506 Danville, CA 5.3 mi
94507 Alamo, CA 5.8 mi
94568 Dublin, CA 6.2 mi
94546 Castro Valley, CA 6.5 mi
94588 Pleasanton, CA 7.1 mi

Find every ZIP code within 10 miles of 94583 →

Questions about this ZIP code

Where is ZIP code 94583?

94583 is in San Ramon, California, in Contra Costa County, part of the San Francisco-Oakland-Fremont, CA metropolitan area. Its published point location is 37.7717, -121.9898.

What county is 94583 in?

94583 lies in Contra Costa County.

What area code is 94583?

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

What time zone is 94583 in?

94583 uses America/Los_Angeles.

How many people live in 94583?

About 39,583 people live in ZIP code 94583, in 13,890 households, at 1,864.0 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 94583?

$184,898 a year, against $99,122 across California.

What ZIP codes are near 94583?

The closest are 94570 (1.9 mi), 94526 (3 mi), 94582 (4.1 mi), 94552 (4.7 mi) and 94528 (5.1 mi).

Is 94583 a PO Box ZIP code?

94583 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “94583 ZIP Code — San Ramon, California (Contra Costa County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/94583

Machine-readable version of these facts:

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