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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/10550

10550

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

Type
Standard
Time zone
America/New_York
County
Westchester +1 more
Population
38,972
Coordinates
40.9054, -73.8353
☼ Live from 10550 — Mount Vernon, NY

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Local time: —

Where 10550 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 10550
  • 🔢 Type 10550 into a pocket calculator and turn it upside down: OSSOI — not quite a word, sorry.
  • ➕ As a number, 10,550 = 2 × 5 × 5 × 211. Its digits add up to 11, a total 714 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10100100110110
  • 🏠 Its numerical neighbours: 10549 (Mount Kisco, NY, 21 mi away) and 10551 (Mount Vernon, NY, 1 mi away).
  • 🔄 Backwards, 10550 becomes 05501 — and that is a real ZIP code: Andover, MA, 182 miles away.
  • 👥 18 other ZIP codes are made of exactly the same digits (01505, 01550, 05051, 05150, 05501, 10055, …). The farthest-flung twin is 51050 in Remsen, IA, 1,142 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 10550 and you would come out at 40.91°S, 106.16°E — 819 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 07m of daylight. Shortest: 9h 14m.
  • 📏 At 2.0 square miles of land, 10550 is bigger than 12% of ZIP codes — room for about 1.5 Central Parks.
🌙 The sky over 10550 today
  • Working out the sun…
🌋 Shake report
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Source: USGS.

People and housing

Population38,972This ZIP38,972
Households14,912This ZIP14,912
Housing units16,161This ZIP16,161
Median age39.8This ZIP39.8New York39.8US 38.9
Median household income$60,701This ZIP$60,701New York$85,974US $80,734
Median home value$494,300This ZIP$494,300New York$423,800US $332,700
Median gross rent$1,532This ZIP$1,532New York$1,621US $1,413
Bachelor's degree or higher24.9%This ZIP24.9%
Mean commute35.3 minThis ZIP35.3 min
Population density19,613.5 / sq miThis ZIP19,613.5 / sq mi

Business and tax activity

Business establishments940This ZIP940
Employees13,661This ZIP13,661
Annual payroll$879,390,000This ZIP$879,390,000
Tax returns filed19,210This ZIP19,210
Total adjusted gross income$948,128,000This ZIP$948,128,000

Land area

Land area1.99 sq miThis ZIP1.99 sq mi
Water area0.01 sq miThis ZIP0.01 sq mi

Counties 10550 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Westchester County 100.0%
Bronx County 0.0%

Other place names in 10550

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 10550

ZIPCityDistance
10551 Mount Vernon, NY 0.5 mi
10553 Mount Vernon, NY 0.7 mi
10466 Bronx, NY 1.2 mi
10552 Mount Vernon, NY 1.4 mi
10803 Pelham, NY 1.6 mi
10704 Yonkers, NY 1.7 mi
10475 Bronx, NY 2.1 mi
10470 Bronx, NY 2.2 mi
10708 Bronxville, NY 2.3 mi
10469 Bronx, NY 2.6 mi

Find every ZIP code within 10 miles of 10550 →

Questions about this ZIP code

Where is ZIP code 10550?

10550 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 40.9054, -73.8353.

What county is 10550 in?

10550 spans 2 counties: Westchester County and Bronx County. Most of it falls in Westchester County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 10550?

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

What time zone is 10550 in?

10550 uses America/New_York.

How many people live in 10550?

About 38,972 people live in ZIP code 10550, in 14,912 households, at 19,613.5 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 10550?

$60,701 a year, against $85,974 across New York.

What ZIP codes are near 10550?

The closest are 10551 (0.5 mi), 10553 (0.7 mi), 10466 (1.2 mi), 10552 (1.4 mi) and 10803 (1.6 mi).

Is 10550 a PO Box ZIP code?

10550 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “10550 ZIP Code — Mount Vernon, New York (Westchester County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/10550

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