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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/33045

33045

ZIP 33045 is in Key West, Florida, in Monroe County; Eastern time. Key West has 3 ZIP codes; the others are 33040 and 33041.

Type
No street area
Time zone
America/New_York
County
Monroe
Coordinates
24.5552, -81.7816

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 33040, whose figures describe that area — not this ZIP code.

☼ Live from 33045 — Key West, FL

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Local time: —

Where 33045 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 33045
  • 🔢 Type 33045 into a pocket calculator and turn it upside down: ShOEE — not quite a word, sorry.
  • ➕ As a number, 33,045 = 3 × 5 × 2203. Its digits add up to 15, a total 1,657 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1000000100010101
  • 🏠 Its numerical neighbours: 33043 (Big Pine Key, FL, 34 mi away) and 33050 (Marathon, FL, 52 mi away).
  • 🔄 Backwards, 33045 becomes 54033, which is not a ZIP code at all.
  • 👥 29 other ZIP codes are made of exactly the same digits (03435, 04353, 05343, 30345, 30354, 30453, …). The farthest-flung twin is 34035 in APO AA, a military post office, 4,437 miles away.
  • 🧭 Farther south than 98% of all ZIP codes, and farther east than 67%.
  • 🎯1,437 miles southeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 33045 and you would come out at 24.56°S, 98.22°E — 861 miles from West Island, Cocos Islands, the nearest big city to that spot.
  • ☀Longest day of the year: 13h 40m of daylight. Shortest: 10h 37m.
🌙 The sky over 33045 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments9This ZIP9
Employees27This ZIP27
Annual payroll$1,333,000This ZIP$1,333,000

Land area

ZIP codes near 33045

ZIPCityDistance
33041 Key West, FL 0.0 mi
33040 Key West, FL 8.8 mi
33042 Summerland Key, FL 19.1 mi
33043 Big Pine Key, FL 33.7 mi
33052 Marathon Shores, FL 46.6 mi
33051 Key Colony Beach, FL 49.1 mi
33050 Marathon, FL 51.7 mi
33001 Long Key, FL 64.5 mi
33036 Islamorada, FL 72.0 mi
33070 Tavernier, FL 84.6 mi

Find every ZIP code within 10 miles of 33045 →

Questions about this ZIP code

Where is ZIP code 33045?

33045 is in Key West, Florida, in Monroe County, part of the Key West-Key Largo, FL micropolitan area. Its published point location is 24.5552, -81.7816.

What county is 33045 in?

33045 lies in Monroe County.

What time zone is 33045 in?

33045 uses America/New_York.

What ZIP codes are near 33045?

The closest are 33041 (0 mi), 33040 (8.8 mi), 33042 (19.1 mi), 33043 (33.7 mi) and 33052 (46.6 mi).

Is 33045 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. “33045 ZIP Code — Key West, Florida (Monroe County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/33045

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/33045.json

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