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zipcodes.pro — ZIP/01431

01431

ZIP 01431 is Ashby, Massachusetts, in Middlesex County; area codes 351 and 978; Eastern time.

Type
Standard
Time zone
America/New_York
County
Middlesex
Population
3,211
Coordinates
42.6763, -71.8325
☼ Live from 01431 — Ashby, MA

Weather right now

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Where 01431 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 01431
  • 🔢 Type 01431 into a pocket calculator and turn it upside down: IEhIO — not quite a word, sorry.
  • ➕ As a number, 1,431 = 3 × 3 × 3 × 53. Its digits add up to 9, a total 375 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10110010111
  • 🏠 Its numerical neighbours: 01430 (Ashburnham, MA, 4 mi away) and 01432 (Ayer, MA, 15 mi away).
  • 🔄 Backwards, 01431 becomes 13410 — and that is a real ZIP code: Nelliston, NY, 142 miles away.
  • 👥 30 other ZIP codes are made of exactly the same digits (01341, 10314, 11430, 13041, 13104, 13140, …). The farthest-flung twin is 34011 in APO AA, a military post office, 2,376 miles away.
  • 🧭 Farther north than 80% of all ZIP codes, and farther east than 95%.
  • 🎯1,397 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 01431 and you would come out at 42.68°S, 108.17°E — 852 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 19m of daylight. Shortest: 9h 02m.
  • 📏 At 23.7 square miles of land, 01431 is bigger than 41% of ZIP codes — room for about 18 Central Parks.
🌙 The sky over 01431 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population3,211This ZIP3,211
Households1,261This ZIP1,261
Housing units1,321This ZIP1,321
Median age50.5This ZIP50.5Massachusetts40.0US 38.9
Median household income$115,598This ZIP$115,598Massachusetts$103,960US $80,734
Median home value$390,500This ZIP$390,500Massachusetts$562,100US $332,700
Median gross rent$1,200This ZIP$1,200Massachusetts$1,762US $1,413
Bachelor's degree or higher43.7%This ZIP43.7%
Mean commute32.9 minThis ZIP32.9 min
Population density135.7 / sq miThis ZIP135.7 / sq mi

Business and tax activity

Business establishments60This ZIP60
Employees224This ZIP224
Annual payroll$14,189,000This ZIP$14,189,000
Tax returns filed1,640This ZIP1,640
Total adjusted gross income$141,814,000This ZIP$141,814,000

Land area

Land area23.66 sq miThis ZIP23.66 sq mi
Water area0.39 sq miThis ZIP0.39 sq mi

ZIP codes near 01431

ZIPCityDistance
01474 West Townsend, MA 4.3 mi
01430 Ashburnham, MA 4.5 mi
03071 New Ipswich, NH 5.3 mi
03048 Greenville, NH 5.8 mi
01420 Fitchburg, MA 6.4 mi
01469 Townsend, MA 7.0 mi
01462 Lunenburg, MA 8.6 mi
01473 Westminster, MA 9.2 mi
03033 Brookline, NH 9.4 mi
01441 Westminster, MA 9.8 mi

Find every ZIP code within 10 miles of 01431 →

Questions about this ZIP code

Where is ZIP code 01431?

01431 is in Ashby, Massachusetts, in Middlesex County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 42.6763, -71.8325.

What county is 01431 in?

01431 lies in Middlesex County.

What area code is 01431?

Ashby uses area codes 351 and 978, from NANPA's telephone records.

What time zone is 01431 in?

01431 uses America/New_York.

How many people live in 01431?

About 3,211 people live in ZIP code 01431, in 1,261 households, at 135.7 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 01431?

$115,598 a year, against $103,960 across Massachusetts.

What ZIP codes are near 01431?

The closest are 01474 (4.3 mi), 01430 (4.5 mi), 03071 (5.3 mi), 03048 (5.8 mi) and 01420 (6.4 mi).

Is 01431 a PO Box ZIP code?

01431 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “01431 ZIP Code — Ashby, Massachusetts (Middlesex County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/01431

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