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/01203

01203

ZIP 01203 is in Pittsfield, Massachusetts, in Berkshire County; area code 413; Eastern time. Pittsfield has 3 ZIP codes; the others are 01201 and 01202.

Type
No street area
Time zone
America/New_York
County
Berkshire
Metro area
Pittsfield, MA
Coordinates
42.3929, -73.2285

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 01240, whose figures describe that area — not this ZIP code.

☼ Live from 01203 — Pittsfield, MA

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Where 01203 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 01203
  • 🔢 Type 01203 into a pocket calculator and turn it upside down: EOZIO — not quite a word, sorry.
  • ➕ As a number, 1,203 = 3 × 401. Its digits add up to 6, a total 90 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10010110011
  • 🏠 Its numerical neighbours: 01202 (Pittsfield, MA, 0 mi away) and 01220 (Adams, MA, 17 mi away).
  • 🔄 Backwards, 01203 becomes 30210, which is not a ZIP code at all.
  • 👥 24 other ZIP codes are made of exactly the same digits (01032, 01230, 01302, 02130, 02301, 03102, …). The farthest-flung twin is 31020 in Dry Branch, GA, 876 miles away.
  • 🧭 Farther north than 78% of all ZIP codes, and farther east than 92%.
  • 🎯1,327 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 01203 and you would come out at 42.39°S, 106.77°E — 877 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 17m of daylight. Shortest: 9h 04m.
🌙 The sky over 01203 today
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Source: USGS.

Land area

ZIP codes near 01203

ZIPCityDistance
01202 Pittsfield, MA 0.0 mi
01263 Stockbridge, MA 0.0 mi
01240 Lenox, MA 2.1 mi
01242 Lenox Dale, MA 4.2 mi
01201 Pittsfield, MA 5.0 mi
01238 Lee, MA 6.4 mi
01227 Dalton, MA 6.4 mi
01254 Richmond, MA 7.0 mi
01226 Dalton, MA 7.1 mi
01262 Stockbridge, MA 7.5 mi

Find every ZIP code within 10 miles of 01203 →

Questions about this ZIP code

Where is ZIP code 01203?

01203 is in Pittsfield, Massachusetts, in Berkshire County, part of the Pittsfield, MA metropolitan area. Its published point location is 42.3929, -73.2285.

What county is 01203 in?

01203 lies in Berkshire County.

What area code is 01203?

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

What time zone is 01203 in?

01203 uses America/New_York.

What ZIP codes are near 01203?

The closest are 01202 (0 mi), 01263 (0 mi), 01240 (2.1 mi), 01242 (4.2 mi) and 01201 (5 mi).

Is 01203 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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zipcodes.pro. “01203 ZIP Code — Pittsfield, Massachusetts (Berkshire County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/01203

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