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/10551

10551

ZIP 10551 is in Mount Vernon, New York, in Westchester County; area code 914; Eastern time. Mount Vernon has 4 ZIP codes; the others are 10550, 10552 and 10553.

Type
No street area
Time zone
America/New_York
County
Westchester
Coordinates
40.9126, -73.8371

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 10550, whose figures describe that area — not this ZIP code.

☼ Live from 10551 — Mount Vernon, NY

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 10551 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 10551
  • 🔢 Type 10551 into a pocket calculator and turn it upside down: ISSOI — not quite a word, sorry.
  • ➕ As a number, 10,551 = 3 × 3517. Its digits add up to 12, a total 940 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10100100110111
  • 🏠 Its numerical neighbours: 10550 (Mount Vernon, NY, 1 mi away) and 10552 (Mount Vernon, NY, 1 mi away).
  • 🔄 Backwards, 10551 becomes 15501 — and that is a real ZIP code: Somerset, PA, 285 miles away.
  • 👥 20 other ZIP codes are made of exactly the same digits (01515, 05151, 10155, 11055, 11550, 15015, …). The farthest-flung twin is 51105 in Sioux City, IA, 1,164 miles away.
  • 🧭 Farther north than 66% of all ZIP codes, and farther east than 91%.
  • 🎯1,300 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 10551 and you would come out at 40.91°S, 106.16°E — 820 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 07m of daylight. Shortest: 9h 14m.
🌙 The sky over 10551 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

Land area

ZIP codes near 10551

ZIPCityDistance
10550 Mount Vernon, NY 0.5 mi
10553 Mount Vernon, NY 0.9 mi
10552 Mount Vernon, NY 1.0 mi
10704 Yonkers, NY 1.4 mi
10466 Bronx, NY 1.6 mi
10708 Bronxville, NY 1.8 mi
10803 Pelham, NY 1.9 mi
10470 Bronx, NY 2.4 mi
10475 Bronx, NY 2.6 mi
10801 New Rochelle, NY 2.7 mi

Find every ZIP code within 10 miles of 10551 →

Questions about this ZIP code

Where is ZIP code 10551?

10551 is in Mount Vernon, New York, in Westchester County, part of the New York-Newark-Jersey City, NY-NJ metropolitan area. Its published point location is 40.9126, -73.8371.

What county is 10551 in?

10551 lies in Westchester County.

What area code is 10551?

Mount Vernon uses area code 914, from NANPA's telephone records.

What time zone is 10551 in?

10551 uses America/New_York.

What ZIP codes are near 10551?

The closest are 10550 (0.5 mi), 10553 (0.9 mi), 10552 (1 mi), 10704 (1.4 mi) and 10466 (1.6 mi).

Is 10551 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.

Download or cite

Cite this page

zipcodes.pro. “10551 ZIP Code — Mount Vernon, New York (Westchester County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/10551

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/10551.json

Underlying data is public domain or openly licensed — sources, vintages and licences.