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/01243

01243

ZIP 01243 is Middlefield, Massachusetts, in Hampshire County; area code 413; Eastern time.

Type
Standard
Time zone
America/New_York
County
Hampshire
Population
173
Coordinates
42.3679, -73.0541
☼ Live from 01243 — Middlefield, MA

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Local time: —

Where 01243 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 01243
  • 🔢 Type 01243 into a pocket calculator and turn it upside down: EhZIO — not quite a word, sorry.
  • ➕ As a number, 1,243 = 11 × 113. Its digits add up to 10, a total 513 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10011011011
  • 🏠 Its numerical neighbours: 01242 (Lenox Dale, MA, 10 mi away) and 01244 (Mill River, MA, 21 mi away).
  • 🔄 Backwards, 01243 becomes 34210 — and that is a real ZIP code: Bradenton, FL, 1,164 miles away.
  • 👥 68 other ZIP codes are made of exactly the same digits (01342, 01432, 02134, 02143, 02341, 03241, …). The farthest-flung twin is 34021 in APO AA, a military post office, 2,234 miles away.
  • 🧭 Farther north than 78% of all ZIP codes, and farther east than 93%.
  • 🎯1,335 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 01243 and you would come out at 42.37°S, 106.95°E — 870 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 17m of daylight. Shortest: 9h 04m.
  • 📏 At 14.3 square miles of land, 01243 is bigger than 32% of ZIP codes — room for about 11 Central Parks.
🌙 The sky over 01243 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population173This ZIP173
Households76This ZIP76
Housing units99This ZIP99
Median age58.0This ZIP58.0Massachusetts40.0US 38.9
Median household income$91,250This ZIP$91,250Massachusetts$103,960US $80,734
Median home value$292,900This ZIP$292,900Massachusetts$562,100US $332,700
Bachelor's degree or higher37.5%This ZIP37.5%
Mean commute31.8 minThis ZIP31.8 min
Population density12.1 / sq miThis ZIP12.1 / sq mi

Business and tax activity

Business establishments6This ZIP6
Employees23This ZIP23
Annual payroll$820,000This ZIP$820,000

Land area

Land area14.29 sq miThis ZIP14.29 sq mi
Water area0.02 sq miThis ZIP0.02 sq mi

ZIP codes near 01243

ZIPCityDistance
01235 Hinsdale, MA 4.0 mi
01223 Becket, MA 5.3 mi
01098 Worthington, MA 6.0 mi
01011 Chester, MA 7.0 mi
01202 Pittsfield, MA 9.1 mi
01203 Pittsfield, MA 9.1 mi
01263 Stockbridge, MA 9.1 mi
01084 West Chesterfield, MA 9.2 mi
01226 Dalton, MA 9.3 mi
01227 Dalton, MA 9.3 mi

Find every ZIP code within 10 miles of 01243 →

Questions about this ZIP code

Where is ZIP code 01243?

01243 is in Middlefield, Massachusetts, in Hampshire County, part of the Amherst Town-Northampton, MA metropolitan area. Its published point location is 42.3679, -73.0541.

What county is 01243 in?

01243 lies in Hampshire County.

What area code is 01243?

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

What time zone is 01243 in?

01243 uses America/New_York.

How many people live in 01243?

About 173 people live in ZIP code 01243, in 76 households, at 12.1 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 01243?

$91,250 a year, against $103,960 across Massachusetts.

What ZIP codes are near 01243?

The closest are 01235 (4 mi), 01223 (5.3 mi), 01098 (6 mi), 01011 (7 mi) and 01202 (9.1 mi).

Is 01243 a PO Box ZIP code?

01243 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “01243 ZIP Code — Middlefield, Massachusetts (Hampshire County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/01243

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