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zipcodes.pro — ZIP/01921

01921

ZIP 01921 is Boxford, Massachusetts, in Essex County; area codes 351 and 978; Eastern time.

Type
Standard
Time zone
America/New_York
County
Essex
Population
8,250
Coordinates
42.6831, -71.0272
☼ Live from 01921 — Boxford, MA

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Local time: —

Where 01921 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 01921
  • 🔢 Type 01921 into a pocket calculator and turn it upside down: IZGIO — not quite a word, sorry.
  • ➕ As a number, 1,921 = 17 × 113. Its digits add up to 13, a total 1,179 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11110000001
  • 🏠 Its numerical neighbours: 01915 (Beverly, MA, 11 mi away) and 01922 (Byfield, MA, 8 mi away).
  • 🔄 Backwards, 01921 becomes 12910 — and that is a real ZIP code: Altona, NY, 198 miles away.
  • 👥 32 other ZIP codes are made of exactly the same digits (01129, 02119, 02191, 02911, 09112, 09211, …). The farthest-flung twin is 09112 in APO AE, a military post office, 3,703 miles away.
  • 🧭 Farther north than 80% of all ZIP codes, and farther east than 96%.
  • 🎯1,438 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 01921 and you would come out at 42.68°S, 108.97°E — 832 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 19m of daylight. Shortest: 9h 02m.
  • 📏 At 23.6 square miles of land, 01921 is bigger than 41% of ZIP codes — room for about 18 Central Parks.
🌙 The sky over 01921 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population8,250This ZIP8,250
Households2,783This ZIP2,783
Housing units2,910This ZIP2,910
Median age49.3This ZIP49.3Massachusetts40.0US 38.9
Median household income$200,672This ZIP$200,672Massachusetts$103,960US $80,734
Median home value$904,200This ZIP$904,200Massachusetts$562,100US $332,700
Median gross rent$776This ZIP$776Massachusetts$1,762US $1,413
Bachelor's degree or higher70.6%This ZIP70.6%
Mean commute31.1 minThis ZIP31.1 min
Population density349.7 / sq miThis ZIP349.7 / sq mi

Business and tax activity

Business establishments143This ZIP143
Employees875This ZIP875
Annual payroll$54,439,000This ZIP$54,439,000
Tax returns filed3,890This ZIP3,890
Total adjusted gross income$1,140,298,000This ZIP$1,140,298,000

Land area

Land area23.59 sq miThis ZIP23.59 sq mi
Water area0.85 sq miThis ZIP0.85 sq mi

Other place names in 01921

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

ZIP codes near 01921

ZIPCityDistance
01885 West Boxford, MA 2.5 mi
01845 North Andover, MA 3.3 mi
01833 Georgetown, MA 3.7 mi
01834 Groveland, MA 4.9 mi
01949 Middleton, MA 5.1 mi
01983 Topsfield, MA 5.1 mi
01835 Haverhill, MA 5.8 mi
01899 Andover, MA 5.8 mi
01841 Lawrence, MA 6.5 mi
01843 Lawrence, MA 6.8 mi

Find every ZIP code within 10 miles of 01921 →

Questions about this ZIP code

Where is ZIP code 01921?

01921 is in Boxford, Massachusetts, in Essex County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 42.6831, -71.0272.

What county is 01921 in?

01921 lies in Essex County.

What area code is 01921?

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

What time zone is 01921 in?

01921 uses America/New_York.

How many people live in 01921?

About 8,250 people live in ZIP code 01921, in 2,783 households, at 349.7 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 01921?

$200,672 a year, against $103,960 across Massachusetts.

What ZIP codes are near 01921?

The closest are 01885 (2.5 mi), 01845 (3.3 mi), 01833 (3.7 mi), 01834 (4.9 mi) and 01949 (5.1 mi).

Is 01921 a PO Box ZIP code?

01921 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “01921 ZIP Code — Boxford, Massachusetts (Essex County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/01921

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curl https://zipcodes.pro/zip/01921.json

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