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zipcodes.pro — ZIP/01720

01720

ZIP 01720 is in Acton, Massachusetts, in Middlesex County; area codes 978 and 351; Eastern time. Acton has 2 ZIP codes; the other is 01718.

Type
Standard
Time zone
America/New_York
County
Middlesex
Population
23,526
Coordinates
42.4840, -71.4385
☼ Live from 01720 — Acton, MA

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Where 01720 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 01720
  • 🔢 Type 01720 into a pocket calculator and turn it upside down: OZLIO — not quite a word, sorry.
  • ➕ As a number, 1,720 = 2 × 2 × 2 × 5 × 43. Its digits add up to 10, a total 513 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11010111000
  • 🏠 Its numerical neighbours: 01719 (Boxborough, MA, 4 mi away) and 01721 (Ashland, MA, 16 mi away).
  • 🔄 Backwards, 01720 becomes 02710, which is not a ZIP code at all.
  • 👥 27 other ZIP codes are made of exactly the same digits (00721, 01027, 01072, 01270, 01702, 02071, …). The farthest-flung twin is 00721 in Palmer, PR, 1,699 miles away.
  • 🧭 Farther north than 79% of all ZIP codes, and farther east than 95%.
  • 🎯1,418 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 01720 and you would come out at 42.48°S, 108.56°E — 830 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 18m of daylight. Shortest: 9h 04m.
  • 📏 At 19.6 square miles of land, 01720 is bigger than 37% of ZIP codes — room for about 15 Central Parks.
🌙 The sky over 01720 today
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🌋 Shake report
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Source: USGS.

People and housing

Population23,526This ZIP23,526
Households9,098This ZIP9,098
Housing units9,264This ZIP9,264
Median age44.5This ZIP44.5Massachusetts40.0US 38.9
Median household income$159,010This ZIP$159,010Massachusetts$103,960US $80,734
Median home value$814,300This ZIP$814,300Massachusetts$562,100US $332,700
Median gross rent$1,982This ZIP$1,982Massachusetts$1,762US $1,413
Bachelor's degree or higher79.3%This ZIP79.3%
Mean commute34.6 minThis ZIP34.6 min
Population density1,198.9 / sq miThis ZIP1,198.9 / sq mi

Business and tax activity

Business establishments705This ZIP705
Employees10,629This ZIP10,629
Annual payroll$896,855,000This ZIP$896,855,000
Tax returns filed11,050This ZIP11,050
Total adjusted gross income$2,155,132,000This ZIP$2,155,132,000

Land area

Land area19.62 sq miThis ZIP19.62 sq mi
Water area0.43 sq miThis ZIP0.43 sq mi

ZIP codes near 01720

ZIPCityDistance
01718 Acton, MA 2.7 mi
01703 Framingham, MA 2.8 mi
01704 Framingham, MA 2.8 mi
01705 Framingham, MA 2.8 mi
02456 New Town, MA 2.8 mi
01742 Concord, MA 4.0 mi
01754 Maynard, MA 4.1 mi
01719 Boxborough, MA 4.2 mi
01460 Littleton, MA 4.5 mi
01775 Stow, MA 5.3 mi

Find every ZIP code within 10 miles of 01720 →

Questions about this ZIP code

Where is ZIP code 01720?

01720 is in Acton, Massachusetts, in Middlesex County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 42.4840, -71.4385.

What county is 01720 in?

01720 lies in Middlesex County.

What area code is 01720?

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

What time zone is 01720 in?

01720 uses America/New_York.

How many people live in 01720?

About 23,526 people live in ZIP code 01720, in 9,098 households, at 1,198.9 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 01720?

$159,010 a year, against $103,960 across Massachusetts.

What ZIP codes are near 01720?

The closest are 01718 (2.7 mi), 01703 (2.8 mi), 01704 (2.8 mi), 01705 (2.8 mi) and 02456 (2.8 mi).

Is 01720 a PO Box ZIP code?

01720 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “01720 ZIP Code — Acton, Massachusetts (Middlesex County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/01720

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