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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/02204

02204

ZIP 02204 is in Boston, Massachusetts, in Suffolk County; area codes 617 and 857; Eastern time. Boston has 36 ZIP codes in all.

Type
No street area
Time zone
America/New_York
County
Suffolk
Coordinates
42.3389, -70.9196

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.

☼ Live from 02204 — Boston, MA

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Where 02204 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 02204
  • 🔢 Type 02204 into a pocket calculator and turn it upside down: hOZZO — not quite a word, sorry.
  • ➕ As a number, 2,204 = 2 × 2 × 19 × 29. Its digits add up to 8, a total 251 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 100010011100
  • 🏠 Its numerical neighbours: 02203 (Boston, MA, 7 mi away) and 02205 (Boston, MA, 7 mi away).
  • 🔄 Backwards, 02204 becomes 40220 — and that is a real ZIP code: Louisville, KY, 824 miles away.
  • 👥 17 other ZIP codes are made of exactly the same digits (02420, 04022, 04220, 20024, 20042, 20204, …). The farthest-flung twin is 42002 in Paducah, KY, 1,011 miles away.
  • 🧭 Farther north than 78% of all ZIP codes, and farther east than 96%.
  • 🎯1,444 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 02204 and you would come out at 42.34°S, 109.08°E — 808 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 02204 today
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Source: USGS.

Land area

ZIP codes near 02204

ZIPCityDistance
02123 Boston, MA 0.0 mi
02206 Boston, MA 0.0 mi
02217 Boston, MA 0.0 mi
02283 Boston, MA 0.0 mi
02284 Boston, MA 0.0 mi
02152 Winthrop, MA 4.0 mi
02045 Hull, MA 4.2 mi
02128 Boston, MA 4.7 mi
02127 Boston, MA 6.1 mi
02210 Boston, MA 6.1 mi

Find every ZIP code within 10 miles of 02204 →

Questions about this ZIP code

Where is ZIP code 02204?

02204 is in Boston, Massachusetts, in Suffolk County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 42.3389, -70.9196.

What county is 02204 in?

02204 lies in Suffolk County.

What area code is 02204?

Boston uses area codes 617 and 857, from NANPA's telephone records.

What time zone is 02204 in?

02204 uses America/New_York.

What ZIP codes are near 02204?

The closest are 02123 (0 mi), 02206 (0 mi), 02217 (0 mi), 02283 (0 mi) and 02284 (0 mi).

Is 02204 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. “02204 ZIP Code — Boston, Massachusetts (Suffolk County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/02204

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/02204.json

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