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/29457

29457

ZIP 29457 is in Johns Island, South Carolina, in Charleston County; area codes 843 and 854; Eastern time. Johns Island has 2 ZIP codes; the other is 29455.

Type
No street area
Time zone
America/New_York
County
Charleston
Coordinates
32.7924, -80.1081

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 29455, whose figures describe that area — not this ZIP code.

☼ Live from 29457 — Johns Island, SC

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Where 29457 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 29457
  • 🔢 Type 29457 into a pocket calculator and turn it upside down: LShGZ — not quite a word, sorry.
  • ➕ As a number, 29,457 = 3 × 3 × 3 × 1091. Its digits add up to 27, a total 1,806 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 111001100010001
  • 🏠 Its numerical neighbours: 29456 (Ladson, SC, 13 mi away) and 29458 (Mc Clellanville, SC, 43 mi away).
  • 🔄 Backwards, 29457 becomes 75492 — and that is a real ZIP code: Windom, TX, 919 miles away.
  • 👥 50 other ZIP codes are made of exactly the same digits (24579, 24597, 24957, 27495, 27549, 27594, …). The farthest-flung twin is 95427 in Comptche, CA, 2,446 miles away.
  • 🧭 Farther south than 85% of all ZIP codes, and farther east than 73%.
  • 🎯1,135 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 29457 and you would come out at 32.79°S, 99.89°E — 933 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 19m of daylight. Shortest: 9h 59m.
🌙 The sky over 29457 today
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Source: USGS.

Business and tax activity

Business establishments6This ZIP6
Employees31This ZIP31
Annual payroll$1,392,000This ZIP$1,392,000

Land area

ZIP codes near 29457

ZIPCityDistance
29414 Charleston, SC 3.5 mi
29470 Ravenel, SC 6.1 mi
29407 Charleston, SC 6.4 mi
29455 Johns Island, SC 7.5 mi
29404 Charleston Afb, SC 8.0 mi
29418 North Charleston, SC 8.1 mi
29405 North Charleston, SC 8.5 mi
29409 Charleston, SC 8.6 mi
29415 North Charleston, SC 8.9 mi
29419 North Charleston, SC 8.9 mi

Find every ZIP code within 10 miles of 29457 →

Questions about this ZIP code

Where is ZIP code 29457?

29457 is in Johns Island, South Carolina, in Charleston County, part of the Charleston-North Charleston, SC metropolitan area. Its published point location is 32.7924, -80.1081.

What county is 29457 in?

29457 lies in Charleston County.

What area code is 29457?

Johns Island uses area codes 843 and 854, from NANPA's telephone records.

What time zone is 29457 in?

29457 uses America/New_York.

What ZIP codes are near 29457?

The closest are 29414 (3.5 mi), 29470 (6.1 mi), 29407 (6.4 mi), 29455 (7.5 mi) and 29404 (8 mi).

Is 29457 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. “29457 ZIP Code — Johns Island, South Carolina (Charleston County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/29457

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/29457.json

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