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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/10523

10523

ZIP 10523 is Elmsford, New York, in Westchester County; Eastern time.

Type
Standard
Time zone
America/New_York
County
Westchester
Population
9,450
Coordinates
41.0595, -73.8193
☼ Live from 10523 — Elmsford, NY

Weather right now

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NEXRAD radar
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Local time: —

Where 10523 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 10523
  • 🔢 Type 10523 into a pocket calculator and turn it upside down: EZSOI — not quite a word, sorry.
  • ➕ As a number, 10,523 = 17 × 619. Its digits add up to 11, a total 714 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10100100011011
  • 🏠 Its numerical neighbours: 10522 (Dobbs Ferry, NY, 4 mi away) and 10524 (Garrison, NY, 23 mi away).
  • 🔄 Backwards, 10523 becomes 32501 — and that is a real ZIP code: Pensacola, FL, 1,049 miles away.
  • 👥 73 other ZIP codes are made of exactly the same digits (01235, 01253, 01523, 01532, 02135, 02153, …). The farthest-flung twin is 51023 in Hawarden, IA, 1,166 miles away.
  • 🧭 Farther north than 67% 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 10523 and you would come out at 41.06°S, 106.18°E — 827 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 08m of daylight. Shortest: 9h 13m.
  • 📏 At 3.6 square miles of land, 10523 is bigger than 16% of ZIP codes — room for about 2.8 Central Parks.
🌙 The sky over 10523 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population9,450This ZIP9,450
Households3,180This ZIP3,180
Housing units3,606This ZIP3,606
Median age33.9This ZIP33.9New York39.8US 38.9
Median household income$118,438This ZIP$118,438New York$85,974US $80,734
Median home value$588,100This ZIP$588,100New York$423,800US $332,700
Median gross rent$2,978This ZIP$2,978New York$1,621US $1,413
Bachelor's degree or higher50.0%This ZIP50.0%
Mean commute28.8 minThis ZIP28.8 min
Population density2,591.9 / sq miThis ZIP2,591.9 / sq mi

Business and tax activity

Business establishments631This ZIP631
Employees11,034This ZIP11,034
Annual payroll$749,733,000This ZIP$749,733,000
Tax returns filed5,220This ZIP5,220
Total adjusted gross income$444,308,000This ZIP$444,308,000

Land area

Land area3.65 sq miThis ZIP3.65 sq mi
Water area0.00 sq miThis ZIP0.00 sq mi

Other place names in 10523

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

ZIP codes near 10523

ZIPCityDistance
10607 White Plains, NY 1.5 mi
10603 White Plains, NY 2.1 mi
10591 Tarrytown, NY 2.2 mi
10533 Irvington, NY 2.4 mi
10530 Hartsdale, NY 2.5 mi
10595 Valhalla, NY 2.8 mi
10532 Hawthorne, NY 3.0 mi
10601 White Plains, NY 3.4 mi
10602 White Plains, NY 3.4 mi
10606 White Plains, NY 3.5 mi

Find every ZIP code within 10 miles of 10523 →

Questions about this ZIP code

Where is ZIP code 10523?

10523 is in Elmsford, New York, in Westchester County, part of the New York-Newark-Jersey City, NY-NJ metropolitan area. Its published point location is 41.0595, -73.8193.

What county is 10523 in?

10523 lies in Westchester County.

What time zone is 10523 in?

10523 uses America/New_York.

How many people live in 10523?

About 9,450 people live in ZIP code 10523, in 3,180 households, at 2,591.9 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 10523?

$118,438 a year, against $85,974 across New York.

What ZIP codes are near 10523?

The closest are 10607 (1.5 mi), 10603 (2.1 mi), 10591 (2.2 mi), 10533 (2.4 mi) and 10530 (2.5 mi).

Is 10523 a PO Box ZIP code?

10523 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “10523 ZIP Code — Elmsford, New York (Westchester County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/10523

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