Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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/02454

02454

ZIP 02454 is in Waltham, Massachusetts, in Middlesex County; area codes 781, 617 and 339; Eastern time. Waltham has 4 ZIP codes; the others are 02451, 02452 and 02453.

Type
No street area
Time zone
America/New_York
County
Middlesex
Coordinates
42.3567, -71.2505

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 02453, whose figures describe that area — not this ZIP code.

☼ Live from 02454 — Waltham, MA

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Where 02454 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 02454
  • 🔢 Type 02454 into a pocket calculator and turn it upside down: hShZO — not quite a word, sorry.
  • ➕ As a number, 2,454 = 2 × 3 × 409. Its digits add up to 15, a total 1,657 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 100110010110
  • 🏠 Its numerical neighbours: 02453 (Waltham, MA, 1 mi away) and 02455 (North Waltham, MA, 2 mi away).
  • 🔄 Backwards, 02454 becomes 45420 — and that is a real ZIP code: Dayton, OH, 695 miles away.
  • 👥 34 other ZIP codes are made of exactly the same digits (02445, 04254, 05442, 20544, 24054, 24450, …). The farthest-flung twin is 50424 in Buffalo Center, IA, 1,148 miles away.
  • 🧭 Farther north than 78% of all ZIP codes, and farther east than 96%.
  • 🎯1,428 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 02454 and you would come out at 42.36°S, 108.75°E — 818 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 17m of daylight. Shortest: 9h 04m.
🌙 The sky over 02454 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments29This ZIP29
Employees592This ZIP592
Annual payroll$66,288,000This ZIP$66,288,000

Land area

ZIP codes near 02454

ZIPCityDistance
02466 Auburndale, MA 0.8 mi
02453 Waltham, MA 1.0 mi
02465 West Newton, MA 1.3 mi
02462 Newton Lower Falls, MA 1.8 mi
02468 Waban, MA 2.1 mi
02460 Newtonville, MA 2.2 mi
02455 North Waltham, MA 2.3 mi
02495 Nonantum, MA 2.5 mi
02493 Weston, MA 2.7 mi
02451 Waltham, MA 3.1 mi

Find every ZIP code within 10 miles of 02454 →

Questions about this ZIP code

Where is ZIP code 02454?

02454 is in Waltham, Massachusetts, in Middlesex County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 42.3567, -71.2505.

What county is 02454 in?

02454 lies in Middlesex County.

What area code is 02454?

Waltham uses area codes 781, 617 and 339, from NANPA's telephone records.

What time zone is 02454 in?

02454 uses America/New_York.

What ZIP codes are near 02454?

The closest are 02466 (0.8 mi), 02453 (1 mi), 02465 (1.3 mi), 02462 (1.8 mi) and 02468 (2.1 mi).

Is 02454 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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Cite this page

zipcodes.pro. “02454 ZIP Code — Waltham, Massachusetts (Middlesex County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/02454

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/02454.json

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