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zipcodes.pro — ZIP/02478

02478

ZIP 02478 is Belmont, Massachusetts, in Middlesex County; area codes 617 and 857; Eastern time.

Type
Standard
Time zone
America/New_York
County
Middlesex
Population
27,175
Coordinates
42.3953, -71.1803
☼ Live from 02478 — Belmont, MA

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Local time: —

Where 02478 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 02478
  • 🔢 Type 02478 into a pocket calculator and turn it upside down: BLhZO — not quite a word, sorry.
  • ➕ As a number, 2,478 = 2 × 3 × 7 × 59. Its digits add up to 21, a total 2,594 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 100110101110
  • 🏠 Its numerical neighbours: 02477 (Watertown, MA, 2 mi away) and 02479 (Waverley, MA, 1 mi away).
  • 🔄 Backwards, 02478 becomes 87420 — and that is a real ZIP code: Shiprock, NM, 2,028 miles away.
  • 👥 57 other ZIP codes are made of exactly the same digits (02748, 02874, 04287, 07428, 07842, 08247, …). The farthest-flung twin is 84720 in Cedar City, UT, 2,231 miles away.
  • 🧭 Farther north than 78% of all ZIP codes, and farther east than 96%.
  • 🎯1,431 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 02478 and you would come out at 42.40°S, 108.82°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.
  • 📏 At 4.6 square miles of land, 02478 is bigger than 18% of ZIP codes — room for about 3.5 Central Parks.
🌙 The sky over 02478 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population27,175This ZIP27,175
Households10,412This ZIP10,412
Housing units10,881This ZIP10,881
Median age42.9This ZIP42.9Massachusetts40.0US 38.9
Median household income$183,137This ZIP$183,137Massachusetts$103,960US $80,734
Median home value$1,159,000This ZIP$1,159,000Massachusetts$562,100US $332,700
Median gross rent$2,527This ZIP$2,527Massachusetts$1,762US $1,413
Bachelor's degree or higher80.9%This ZIP80.9%
Mean commute29.3 minThis ZIP29.3 min
Population density5,850.4 / sq miThis ZIP5,850.4 / sq mi

Business and tax activity

Business establishments623This ZIP623
Employees7,481This ZIP7,481
Annual payroll$506,831,000This ZIP$506,831,000
Tax returns filed12,920This ZIP12,920
Total adjusted gross income$3,313,910,000This ZIP$3,313,910,000

Land area

Land area4.65 sq miThis ZIP4.65 sq mi
Water area0.07 sq miThis ZIP0.07 sq mi

Other place names in 02478

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

ZIP codes near 02478

ZIPCityDistance
02479 Waverley, MA 0.5 mi
02476 Arlington, MA 1.5 mi
02471 Watertown, MA 1.7 mi
02477 Watertown, MA 1.7 mi
02475 Arlington Heights, MA 1.7 mi
02472 Watertown, MA 1.8 mi
02452 Waltham, MA 2.0 mi
02474 Arlington, MA 2.2 mi
02140 Cambridge, MA 2.4 mi
02495 Nonantum, MA 2.5 mi

Find every ZIP code within 10 miles of 02478 →

Questions about this ZIP code

Where is ZIP code 02478?

02478 is in Belmont, Massachusetts, in Middlesex County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 42.3953, -71.1803.

What county is 02478 in?

02478 lies in Middlesex County.

What area code is 02478?

Belmont uses area codes 617 and 857, from NANPA's telephone records.

What time zone is 02478 in?

02478 uses America/New_York.

How many people live in 02478?

About 27,175 people live in ZIP code 02478, in 10,412 households, at 5,850.4 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 02478?

$183,137 a year, against $103,960 across Massachusetts.

What ZIP codes are near 02478?

The closest are 02479 (0.5 mi), 02476 (1.5 mi), 02471 (1.7 mi), 02477 (1.7 mi) and 02475 (1.7 mi).

Is 02478 a PO Box ZIP code?

02478 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “02478 ZIP Code — Belmont, Massachusetts (Middlesex County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/02478

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