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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/01378

01378

ZIP 01378 is Warwick, Massachusetts, in Franklin County; Eastern time.

Type
Standard
Time zone
America/New_York
County
Franklin
Metro area
Greenfield, MA
Population
776
Coordinates
42.6800, -72.3399
☼ Live from 01378 — Warwick, MA

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Local time: —

Where 01378 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 01378
  • 🔢 Type 01378 into a pocket calculator and turn it upside down: BLEIO — not quite a word, sorry.
  • ➕ As a number, 1,378 = 2 × 13 × 53. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10101100010
  • 🏠 Its numerical neighbours: 01376 (Turners Falls, MA, 12 mi away) and 01379 (Wendell, MA, 11 mi away).
  • 🔄 Backwards, 01378 becomes 87310 — and that is a real ZIP code: Brimhall, NM, 1,983 miles away.
  • 👥 52 other ZIP codes are made of exactly the same digits (03781, 03817, 03871, 07831, 08317, 08731, …). The farthest-flung twin is 83701 in Boise, ID, 2,190 miles away.
  • 🧭 Farther north than 80% of all ZIP codes, and farther east than 94%.
  • 🎯1,372 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 01378 and you would come out at 42.68°S, 107.66°E — 866 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 19m of daylight. Shortest: 9h 02m.
  • 📏 At 37.3 square miles of land, 01378 is bigger than 51% of ZIP codes — room for about 28 Central Parks.
🌙 The sky over 01378 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population776This ZIP776
Households362This ZIP362
Housing units424This ZIP424
Median age51.4This ZIP51.4Massachusetts40.0US 38.9
Median household income$93,333This ZIP$93,333Massachusetts$103,960US $80,734
Median home value$349,400This ZIP$349,400Massachusetts$562,100US $332,700
Median gross rent$1,367This ZIP$1,367Massachusetts$1,762US $1,413
Bachelor's degree or higher40.5%This ZIP40.5%
Mean commute40.0 minThis ZIP40.0 min
Population density20.8 / sq miThis ZIP20.8 / sq mi

Business and tax activity

Business establishments3This ZIP3
Employees6This ZIP6
Annual payroll$272,000This ZIP$272,000
Tax returns filed370This ZIP370
Total adjusted gross income$24,995,000This ZIP$24,995,000

Land area

Land area37.35 sq miThis ZIP37.35 sq mi
Water area0.31 sq miThis ZIP0.31 sq mi

ZIP codes near 01378

ZIPCityDistance
01364 Orange, MA 5.7 mi
01360 Northfield, MA 5.8 mi
03470 Winchester, NH 6.4 mi
01344 Erving, MA 6.4 mi
01380 Wendell Depot, MA 7.2 mi
01368 Royalston, MA 7.9 mi
03441 Ashuelot, NH 8.8 mi
01354 Gill, MA 9.4 mi
01349 Millers Falls, MA 10.1 mi
03447 Fitzwilliam, NH 10.8 mi

Find every ZIP code within 10 miles of 01378 →

Questions about this ZIP code

Where is ZIP code 01378?

01378 is in Warwick, Massachusetts, in Franklin County, part of the Greenfield, MA micropolitan area. Its published point location is 42.6800, -72.3399.

What county is 01378 in?

01378 lies in Franklin County.

What time zone is 01378 in?

01378 uses America/New_York.

How many people live in 01378?

About 776 people live in ZIP code 01378, in 362 households, at 20.8 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 01378?

$93,333 a year, against $103,960 across Massachusetts.

What ZIP codes are near 01378?

The closest are 01364 (5.7 mi), 01360 (5.8 mi), 03470 (6.4 mi), 01344 (6.4 mi) and 01380 (7.2 mi).

Is 01378 a PO Box ZIP code?

01378 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “01378 ZIP Code — Warwick, Massachusetts (Franklin County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/01378

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