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/01003

01003

ZIP 01003 is in Amherst, Massachusetts, in Hampshire County; area code 413; Eastern time. Amherst has 3 ZIP codes; the others are 01002 and 01004.

Type
Standard
Time zone
America/New_York
County
Hampshire
Population
13,510
Coordinates
42.3919, -72.5236
☼ Live from 01003 — Amherst, MA

Weather right now

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Local time: —

Where 01003 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 01003
  • 🔢 Type 01003 into a pocket calculator and turn it upside down: EOOIO — not quite a word, sorry.
  • ➕ As a number, 1,003 = 17 × 59. Its digits add up to 4, a total 27 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1111101011
  • 🏠 Its numerical neighbours: 01002 (Amherst, MA, 3 mi away) and 01004 (Amherst, MA, 1 mi away).
  • 🔄 Backwards, 01003 becomes 30010 — and that is a real ZIP code: Norcross, GA, 853 miles away.
  • 👥 4 other ZIP codes are made of exactly the same digits (01030, 10003, 10030, 30010). The farthest-flung twin is 30010 in Norcross, GA, 853 miles away.
  • 🧭 Farther north than 78% of all ZIP codes, and farther east than 94%.
  • 🎯1,363 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 01003 and you would come out at 42.39°S, 107.48°E — 855 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 17m of daylight. Shortest: 9h 04m.
  • 📏 At 0.804 square miles of land, 01003 is bigger than 7% of ZIP codes — about 389 football fields.
🌙 The sky over 01003 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population13,510This ZIP13,510
Households44This ZIP44
Housing units73This ZIP73
Median age19.7This ZIP19.7Massachusetts40.0US 38.9
Median gross rent$2,643This ZIP$2,643Massachusetts$1,762US $1,413
Bachelor's degree or higher47.2%This ZIP47.2%
Mean commute12.0 minThis ZIP12.0 min
Population density16,803.5 / sq miThis ZIP16,803.5 / sq mi

Business and tax activity

Business establishments22This ZIP22
Employees277This ZIP277
Annual payroll$16,650,000This ZIP$16,650,000

Land area

Land area0.80 sq miThis ZIP0.80 sq mi
Water area0.01 sq miThis ZIP0.01 sq mi

Other place names in 01003

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

ZIP codes near 01003

ZIPCityDistance
01004 Amherst, MA 0.7 mi
01059 North Amherst, MA 1.3 mi
01002 Amherst, MA 3.2 mi
01035 Hadley, MA 3.4 mi
01038 Hatfield, MA 4.2 mi
01375 Sunderland, MA 5.3 mi
01066 North Hatfield, MA 5.3 mi
01054 Leverett, MA 5.7 mi
01061 Northampton, MA 5.9 mi
01088 West Hatfield, MA 6.0 mi

Find every ZIP code within 10 miles of 01003 →

Questions about this ZIP code

Where is ZIP code 01003?

01003 is in Amherst, Massachusetts, in Hampshire County, part of the Amherst Town-Northampton, MA metropolitan area. Its published point location is 42.3919, -72.5236.

What county is 01003 in?

01003 lies in Hampshire County.

What area code is 01003?

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

What time zone is 01003 in?

01003 uses America/New_York.

How many people live in 01003?

About 13,510 people live in ZIP code 01003, in 44 households, at 16,803.5 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What ZIP codes are near 01003?

The closest are 01004 (0.7 mi), 01059 (1.3 mi), 01002 (3.2 mi), 01035 (3.4 mi) and 01038 (4.2 mi).

Is 01003 a PO Box ZIP code?

01003 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “01003 ZIP Code — Amherst, Massachusetts (Hampshire County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/01003

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