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/34991

34991

ZIP 34991 is in Palm City, Florida, in Martin County; area code 772; Eastern time. Palm City has 2 ZIP codes; the other is 34990.

Type
No street area
Time zone
America/New_York
County
Martin
Metro area
Port St. Lucie, FL
Coordinates
27.1678, -80.2662

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 34990, whose figures describe that area — not this ZIP code.

☼ Live from 34991 — Palm City, FL

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Where 34991 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 34991
  • 🔢 Type 34991 into a pocket calculator and turn it upside down: IGGhE — not quite a word, sorry.
  • ➕ As a number, 34,991 = 11 × 3181. Its digits add up to 26, a total 2,038 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1000100010101111
  • 🏠 Its numerical neighbours: 34990 (Palm City, FL, 6 mi away) and 34992 (Port Salerno, FL, 4 mi away).
  • 🔄 Backwards, 34991 becomes 19943 — and that is a real ZIP code: Felton, DE, 861 miles away.
  • 👥 18 other ZIP codes are made of exactly the same digits (19493, 19934, 19943, 39149, 39194, 43199, …). The farthest-flung twin is 94931 in Cotati, CA, 2,560 miles away.
  • 🧭 Farther south than 97% of all ZIP codes, and farther east than 73%.
  • 🎯1,366 miles southeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 34991 and you would come out at 27.17°S, 99.73°E — 1,023 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 13h 51m of daylight. Shortest: 10h 26m.
🌙 The sky over 34991 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments17This ZIP17
Employees82This ZIP82
Annual payroll$2,973,000This ZIP$2,973,000

Land area

ZIP codes near 34991

ZIPCityDistance
34995 Stuart, FL 1.6 mi
34994 Stuart, FL 2.3 mi
34992 Port Salerno, FL 4.4 mi
34996 Stuart, FL 5.0 mi
34958 Jensen Beach, FL 5.8 mi
34990 Palm City, FL 6.1 mi
34984 Port Saint Lucie, FL 6.9 mi
34957 Jensen Beach, FL 7.5 mi
34997 Stuart, FL 8.1 mi
34953 Port Saint Lucie, FL 9.2 mi

Find every ZIP code within 10 miles of 34991 →

Questions about this ZIP code

Where is ZIP code 34991?

34991 is in Palm City, Florida, in Martin County, part of the Port St. Lucie, FL metropolitan area. Its published point location is 27.1678, -80.2662.

What county is 34991 in?

34991 lies in Martin County.

What area code is 34991?

Palm City uses area code 772, from NANPA's telephone records.

What time zone is 34991 in?

34991 uses America/New_York.

What ZIP codes are near 34991?

The closest are 34995 (1.6 mi), 34994 (2.3 mi), 34992 (4.4 mi), 34996 (5 mi) and 34958 (5.8 mi).

Is 34991 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. “34991 ZIP Code — Palm City, Florida (Martin County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/34991

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/34991.json

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