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/02304

02304

ZIP 02304 is in Brockton, Massachusetts, in Plymouth County; area codes 508 and 774; Eastern time. Brockton has 5 ZIP codes; the others are 02301, 02302, 02303 and 02305.

Type
No street area
Time zone
America/New_York
County
Plymouth
Coordinates
42.0834, -71.0184

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 02301, whose figures describe that area — not this ZIP code.

☼ Live from 02304 — Brockton, MA

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Where 02304 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 02304
  • 🔢 Type 02304 into a pocket calculator and turn it upside down: hOEZO — not quite a word, sorry.
  • ➕ As a number, 2,304 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3. Its digits add up to 9, a total 375 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 100100000000
  • 🏠 Its numerical neighbours: 02303 (Brockton, MA, 0 mi away) and 02305 (Brockton, MA, 0 mi away).
  • 🔄 Backwards, 02304 becomes 40320, which is not a ZIP code at all.
  • 👥 27 other ZIP codes are made of exactly the same digits (02043, 02340, 03042, 03240, 04032, 04230, …). The farthest-flung twin is 34020 in APO AA, a military post office, 2,358 miles away.
  • 🧭 Farther north than 76% of all ZIP codes, and farther east than 96%.
  • 🎯1,440 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 02304 and you would come out at 42.08°S, 108.98°E — 796 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 15m of daylight. Shortest: 9h 06m.
🌙 The sky over 02304 today
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Source: USGS.

Land area

ZIP codes near 02304

ZIPCityDistance
02303 Brockton, MA 0.0 mi
02305 Brockton, MA 0.0 mi
02302 Brockton, MA 1.1 mi
02301 Brockton, MA 1.3 mi
02357 North Easton, MA 3.3 mi
02322 Avon, MA 3.9 mi
02351 Abington, MA 3.9 mi
02382 Whitman, MA 4.1 mi
02343 Holbrook, MA 4.1 mi
02379 West Bridgewater, MA 4.3 mi

Find every ZIP code within 10 miles of 02304 →

Questions about this ZIP code

Where is ZIP code 02304?

02304 is in Brockton, Massachusetts, in Plymouth County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 42.0834, -71.0184.

What county is 02304 in?

02304 lies in Plymouth County.

What area code is 02304?

Brockton uses area codes 508 and 774, from NANPA's telephone records.

What time zone is 02304 in?

02304 uses America/New_York.

What ZIP codes are near 02304?

The closest are 02303 (0 mi), 02305 (0 mi), 02302 (1.1 mi), 02301 (1.3 mi) and 02357 (3.3 mi).

Is 02304 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. “02304 ZIP Code — Brockton, Massachusetts (Plymouth County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/02304

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curl https://zipcodes.pro/zip/02304.json

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