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zipcodes.pro — ZIP/94548

94548

ZIP 94548 is Knightsen, California, in Contra Costa County; Pacific time.

Type
Standard
Time zone
America/Los_Angeles
County
Contra Costa
Population
832
Coordinates
37.9743, -121.6514
☼ Live from 94548 — Knightsen, CA

Weather right now

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Local time: —

Where 94548 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 94548
  • 🔢 Type 94548 into a pocket calculator and turn it upside down: BhShG — not quite a word, sorry.
  • ➕ As a number, 94,548 = 2 × 2 × 3 × 7879. Its digits add up to 30, a total 1,024 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111000101010100
  • 🏠 Its numerical neighbours: 94547 (Hercules, CA, 33 mi away) and 94549 (Lafayette, CA, 26 mi away).
  • 🔄 Backwards, 94548 becomes 84549, which is not a ZIP code at all.
  • 👥 20 other ZIP codes are made of exactly the same digits (44859, 45849, 45894, 49458, 49548, 49845, …). The farthest-flung twin is 44859 in Nova, OH, 2,089 miles away.
  • 🧭 Farther south than 58% of all ZIP codes, and farther west than 95%.
  • 🎯1,244 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 94548 and you would come out at 37.97°S, 58.35°E — 982 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 48m of daylight. Shortest: 9h 32m.
  • 📏 At 2.3 square miles of land, 94548 is bigger than 13% of ZIP codes — room for about 1.8 Central Parks.
🌙 The sky over 94548 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population832This ZIP832
Households259This ZIP259
Housing units259This ZIP259
Median age44.2This ZIP44.2California37.9US 38.9
Median household income$189,653This ZIP$189,653California$99,122US $80,734
Median home value$959,900This ZIP$959,900California$734,700US $332,700
Bachelor's degree or higher22.3%This ZIP22.3%
Mean commute53.2 minThis ZIP53.2 min
Population density360.0 / sq miThis ZIP360.0 / sq mi

Business and tax activity

Business establishments10This ZIP10
Employees60This ZIP60
Annual payroll$2,528,000This ZIP$2,528,000

Land area

Land area2.31 sq miThis ZIP2.31 sq mi
Water area0.09 sq miThis ZIP0.09 sq mi

Other place names in 94548

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

ZIP codes near 94548

ZIPCityDistance
94561 Oakley, CA 2.5 mi
94511 Bethel Island, CA 3.9 mi
94513 Brentwood, CA 3.9 mi
94531 Antioch, CA 7.0 mi
94505 Discovery Bay, CA 7.7 mi
95219 Stockton, CA 8.7 mi
94509 Antioch, CA 8.9 mi
94514 Byron, CA 10.3 mi
95208 Stockton, CA 12.1 mi
95234 Holt, CA 12.6 mi

Find every ZIP code within 10 miles of 94548 →

Questions about this ZIP code

Where is ZIP code 94548?

94548 is in Knightsen, California, in Contra Costa County, part of the San Francisco-Oakland-Fremont, CA metropolitan area. Its published point location is 37.9743, -121.6514.

What county is 94548 in?

94548 lies in Contra Costa County.

What time zone is 94548 in?

94548 uses America/Los_Angeles.

How many people live in 94548?

About 832 people live in ZIP code 94548, in 259 households, at 360.0 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 94548?

$189,653 a year, against $99,122 across California.

What ZIP codes are near 94548?

The closest are 94561 (2.5 mi), 94511 (3.9 mi), 94513 (3.9 mi), 94531 (7 mi) and 94505 (7.7 mi).

Is 94548 a PO Box ZIP code?

94548 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “94548 ZIP Code — Knightsen, California (Contra Costa County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/94548

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