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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/94597

94597

ZIP 94597 is in Walnut Creek, California, in Contra Costa County; area code 925; Pacific time. Walnut Creek has 4 ZIP codes; the others are 94595, 94596 and 94598.

Type
Standard
Time zone
America/Los_Angeles
County
Contra Costa
Population
23,129
Coordinates
37.9177, -122.0718
☼ Live from 94597 — Walnut Creek, CA

Weather right now

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Local time: —

Where 94597 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 94597
  • 🔢 Type 94597 into a pocket calculator and turn it upside down: LGShG — not quite a word, sorry.
  • ➕ 94597 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 34, a total 322 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111000110000101
  • 🏠 Its numerical neighbours: 94596 (Walnut Creek, CA, 3 mi away) and 94598 (Walnut Creek, CA, 3 mi away).
  • 🔄 Backwards, 94597 becomes 79549 — and that is a real ZIP code: Snyder, TX, 1,237 miles away.
  • 👥 24 other ZIP codes are made of exactly the same digits (47959, 47995, 49759, 49795, 54979, 59479, …). The farthest-flung twin is 99547 in Atka, AK, 2,662 miles away.
  • 🧭 Farther south than 59% of all ZIP codes, and farther west than 96%.
  • 🎯1,267 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 94597 and you would come out at 37.92°S, 57.93°E — 998 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 4.1 square miles of land, 94597 is bigger than 17% of ZIP codes — room for about 3.1 Central Parks.
🌙 The sky over 94597 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population23,129This ZIP23,129
Households10,782This ZIP10,782
Housing units11,249This ZIP11,249
Median age39.1This ZIP39.1California37.9US 38.9
Median household income$132,063This ZIP$132,063California$99,122US $80,734
Median home value$1,026,800This ZIP$1,026,800California$734,700US $332,700
Median gross rent$2,661This ZIP$2,661California$2,036US $1,413
Bachelor's degree or higher65.1%This ZIP65.1%
Mean commute32.0 minThis ZIP32.0 min
Population density5,706.6 / sq miThis ZIP5,706.6 / sq mi

Business and tax activity

Business establishments680This ZIP680
Employees9,694This ZIP9,694
Annual payroll$1,107,366,000This ZIP$1,107,366,000
Tax returns filed11,640This ZIP11,640
Total adjusted gross income$1,708,108,000This ZIP$1,708,108,000

Land area

Land area4.05 sq miThis ZIP4.05 sq mi
Water area0.00 sq mi

Other place names in 94597

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

ZIP codes near 94597

ZIPCityDistance
94523 Pleasant Hill, CA 2.5 mi
94596 Walnut Creek, CA 2.8 mi
94549 Lafayette, CA 2.8 mi
94598 Walnut Creek, CA 3.1 mi
94595 Walnut Creek, CA 3.2 mi
94518 Concord, CA 3.5 mi
94522 Concord, CA 4.7 mi
94524 Concord, CA 4.7 mi
94529 Concord, CA 4.7 mi
94520 Concord, CA 5.6 mi

Find every ZIP code within 10 miles of 94597 →

Questions about this ZIP code

Where is ZIP code 94597?

94597 is in Walnut Creek, California, in Contra Costa County, part of the San Francisco-Oakland-Fremont, CA metropolitan area. Its published point location is 37.9177, -122.0718.

What county is 94597 in?

94597 lies in Contra Costa County.

What area code is 94597?

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

What time zone is 94597 in?

94597 uses America/Los_Angeles.

How many people live in 94597?

About 23,129 people live in ZIP code 94597, in 10,782 households, at 5,706.6 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 94597?

$132,063 a year, against $99,122 across California.

What ZIP codes are near 94597?

The closest are 94523 (2.5 mi), 94596 (2.8 mi), 94549 (2.8 mi), 94598 (3.1 mi) and 94595 (3.2 mi).

Is 94597 a PO Box ZIP code?

94597 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “94597 ZIP Code — Walnut Creek, California (Contra Costa County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/94597

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