Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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/01021

01021

ZIP 01021 is in Chicopee, Massachusetts, in Hampden County; area code 413; Eastern time. Chicopee has 5 ZIP codes; the others are 01013, 01014, 01020 and 01022.

Type
No street area
Time zone
America/New_York
County
Hampden
Metro area
Springfield, MA
Coordinates
42.1707, -72.6048

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 01020, whose figures describe that area — not this ZIP code.

☼ Live from 01021 — Chicopee, MA

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Where 01021 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 01021
  • 🔢 Type 01021 into a pocket calculator and turn it upside down: IZOIO — not quite a word, sorry.
  • ➕ 01021 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 4, a total 27 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1111111101
  • 🏠 Its numerical neighbours: 01020 (Chicopee, MA, 2 mi away) and 01022 (Chicopee, MA, 4 mi away).
  • 🔄 Backwards, 01021 becomes 12010 — and that is a real ZIP code: Amsterdam, NY, 96 miles away.
  • 👥 16 other ZIP codes are made of exactly the same digits (01012, 01102, 01201, 02110, 10012, 10021, …). The farthest-flung twin is 20110 in Manassas, VA, 349 miles away.
  • 🧭 Farther north than 76% of all ZIP codes, and farther east than 94%.
  • 🎯1,359 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 01021 and you would come out at 42.17°S, 107.40°E — 845 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 16m of daylight. Shortest: 9h 06m.
🌙 The sky over 01021 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments6This ZIP6
Employees139This ZIP139
Annual payroll$4,716,000This ZIP$4,716,000

Land area

ZIP codes near 01021

ZIPCityDistance
01014 Chicopee, MA 0.0 mi
01090 West Springfield, MA 0.0 mi
01102 Springfield, MA 0.0 mi
01111 Springfield, MA 0.0 mi
01116 Longmeadow, MA 0.0 mi
01138 Springfield, MA 0.0 mi
01139 Springfield, MA 0.0 mi
01152 Springfield, MA 0.0 mi
01013 Chicopee, MA 2.0 mi
01020 Chicopee, MA 2.2 mi

Find every ZIP code within 10 miles of 01021 →

Questions about this ZIP code

Where is ZIP code 01021?

01021 is in Chicopee, Massachusetts, in Hampden County, part of the Springfield, MA metropolitan area. Its published point location is 42.1707, -72.6048.

What county is 01021 in?

01021 lies in Hampden County.

What area code is 01021?

Chicopee uses area code 413, from NANPA's telephone records.

What time zone is 01021 in?

01021 uses America/New_York.

What ZIP codes are near 01021?

The closest are 01014 (0 mi), 01090 (0 mi), 01102 (0 mi), 01111 (0 mi) and 01116 (0 mi).

Is 01021 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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Cite this page

zipcodes.pro. “01021 ZIP Code — Chicopee, Massachusetts (Hampden County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/01021

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/01021.json

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