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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/01731

01731

ZIP 01731 is Hanscom Afb, Massachusetts, in Middlesex County; Eastern time.

Type
Standard
Time zone
America/New_York
County
Middlesex
Population
2,110
Coordinates
42.4646, -71.2848
☼ Live from 01731 — Hanscom Afb, MA

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Where 01731 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 01731
  • 🔢 Type 01731 into a pocket calculator and turn it upside down: IELIO — not quite a word, sorry.
  • ➕ As a number, 1,731 = 3 × 577. Its digits add up to 12, a total 940 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11011000011
  • 🏠 Its numerical neighbours: 01730 (Bedford, MA, 2 mi away) and 01740 (Bolton, MA, 16 mi away).
  • 🔄 Backwards, 01731 becomes 13710, which is not a ZIP code at all.
  • 👥 31 other ZIP codes are made of exactly the same digits (07311, 10173, 11370, 11703, 11730, 13071, …). The farthest-flung twin is 73011 in Bradley, OK, 1,514 miles away.
  • 🧭 Farther north than 79% of all ZIP codes, and farther east than 96%.
  • 🎯1,426 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 01731 and you would come out at 42.46°S, 108.72°E — 825 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 18m of daylight. Shortest: 9h 04m.
  • 📏 At 2.3 square miles of land, 01731 is bigger than 13% of ZIP codes — room for about 1.8 Central Parks.
🌙 The sky over 01731 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population2,110This ZIP2,110
Households680This ZIP680
Housing units680This ZIP680
Median age25.0This ZIP25.0Massachusetts40.0US 38.9
Median household income$104,688This ZIP$104,688Massachusetts$103,960US $80,734
Median gross rent$3,408This ZIP$3,408Massachusetts$1,762US $1,413
Bachelor's degree or higher34.7%This ZIP34.7%
Mean commute23.2 minThis ZIP23.2 min
Population density902.9 / sq miThis ZIP902.9 / sq mi

Business and tax activity

Business establishments16This ZIP16
Employees168This ZIP168
Annual payroll$17,435,000This ZIP$17,435,000
Tax returns filed730This ZIP730
Total adjusted gross income$59,064,000This ZIP$59,064,000

Land area

Land area2.34 sq miThis ZIP2.34 sq mi
Water area0.01 sq miThis ZIP0.01 sq mi

Other place names in 01731

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

ZIP codes near 01731

ZIPCityDistance
01730 Bedford, MA 2.4 mi
02421 Lexington, MA 2.9 mi
01773 Lincoln, MA 3.0 mi
02420 Lexington, MA 3.4 mi
01742 Concord, MA 4.1 mi
02451 Waltham, MA 4.7 mi
01803 Burlington, MA 5.0 mi
01865 Nutting Lake, MA 5.1 mi
01866 Pinehurst, MA 5.3 mi
01805 Burlington, MA 5.3 mi

Find every ZIP code within 10 miles of 01731 →

Questions about this ZIP code

Where is ZIP code 01731?

01731 is in Hanscom Afb, Massachusetts, in Middlesex County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 42.4646, -71.2848.

What county is 01731 in?

01731 lies in Middlesex County.

What time zone is 01731 in?

01731 uses America/New_York.

How many people live in 01731?

About 2,110 people live in ZIP code 01731, in 680 households, at 902.9 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 01731?

$104,688 a year, against $103,960 across Massachusetts.

What ZIP codes are near 01731?

The closest are 01730 (2.4 mi), 02421 (2.9 mi), 01773 (3 mi), 02420 (3.4 mi) and 01742 (4.1 mi).

Is 01731 a PO Box ZIP code?

01731 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “01731 ZIP Code — Hanscom Afb, Massachusetts (Middlesex County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/01731

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