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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/49523

49523

ZIP 49523 is in Grand Rapids, Michigan, in Kent County; area code 616; Eastern time. Grand Rapids has 26 ZIP codes in all.

Type
No street area
Time zone
America/Detroit
County
Kent
Coordinates
42.9634, -85.6681

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 49503, whose figures describe that area — not this ZIP code.

☼ Live from 49523 — Grand Rapids, MI

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Where 49523 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 49523
  • 🔢 Type 49523 into a pocket calculator and turn it upside down: EZSGh — not quite a word, sorry.
  • ➕ 49523 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100000101110011
  • 🏠 Its numerical neighbours: 49519 (Wyoming, MI, 5 mi away) and 49525 (Grand Rapids, MI, 6 mi away).
  • 🔄 Backwards, 49523 becomes 32594, which is not a ZIP code at all.
  • 👥 48 other ZIP codes are made of exactly the same digits (23459, 23954, 24539, 24593, 24935, 25943, …). The farthest-flung twin is 95432 in Elk, CA, 1,980 miles away.
  • 🧭 Farther north than 82% of all ZIP codes, and farther east than 55%.
  • 🎯703 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 49523 and you would come out at 42.96°S, 94.33°E — 1,229 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 21m of daylight. Shortest: 9h 00m.
🌙 The sky over 49523 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments3This ZIP3
Employees10This ZIP10
Annual payroll$180,000This ZIP$180,000

Land area

ZIP codes near 49523

ZIPCityDistance
49502 Grand Rapids, MI 0.0 mi
49555 Grand Rapids, MI 0.0 mi
49503 Grand Rapids, MI 0.4 mi
49507 Grand Rapids, MI 2.4 mi
49501 Grand Rapids, MI 2.4 mi
49504 Grand Rapids, MI 2.5 mi
49505 Grand Rapids, MI 2.8 mi
49506 Grand Rapids, MI 3.0 mi
49509 Wyoming, MI 4.7 mi
49519 Wyoming, MI 5.3 mi

Find every ZIP code within 10 miles of 49523 →

Questions about this ZIP code

Where is ZIP code 49523?

49523 is in Grand Rapids, Michigan, in Kent County, part of the Grand Rapids-Wyoming-Kentwood, MI metropolitan area. Its published point location is 42.9634, -85.6681.

What county is 49523 in?

49523 lies in Kent County.

What area code is 49523?

Grand Rapids uses area code 616, from NANPA's telephone records.

What time zone is 49523 in?

49523 uses America/Detroit.

What ZIP codes are near 49523?

The closest are 49502 (0 mi), 49555 (0 mi), 49503 (0.4 mi), 49507 (2.4 mi) and 49501 (2.4 mi).

Is 49523 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. “49523 ZIP Code — Grand Rapids, Michigan (Kent County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/49523

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/49523.json

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