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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/10603

10603

ZIP 10603 is in White Plains, New York, in Westchester County; Eastern time. White Plains has 7 ZIP codes in all.

Type
Standard
Time zone
America/New_York
County
Westchester
Population
18,910
Coordinates
41.0542, -73.7802
☼ Live from 10603 — White Plains, NY

Weather right now

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NEXRAD radar
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Local time: —

Where 10603 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 10603
  • 🔢 Type 10603 into a pocket calculator and turn it upside down: EOgOI — not quite a word, sorry.
  • ➕ As a number, 10,603 = 23 × 461. Its digits add up to 10, a total 513 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10100101101011
  • 🏠 Its numerical neighbours: 10602 (White Plains, NY, 2 mi away) and 10604 (West Harrison, NY, 2 mi away).
  • 🔄 Backwards, 10603 becomes 30601 — and that is a real ZIP code: Athens, GA, 715 miles away.
  • 👥 32 other ZIP codes are made of exactly the same digits (00613, 00631, 01036, 01063, 01360, 01603, …). The farthest-flung twin is 00631 in Castaner, PR, 1,633 miles away.
  • 🧭 Farther north than 67% of all ZIP codes, and farther east than 91%.
  • 🎯1,302 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 10603 and you would come out at 41.05°S, 106.22°E — 825 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 08m of daylight. Shortest: 9h 13m.
  • 📏 At 3.4 square miles of land, 10603 is bigger than 15% of ZIP codes — room for about 2.6 Central Parks.
🌙 The sky over 10603 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population18,910This ZIP18,910
Households7,128This ZIP7,128
Housing units7,505This ZIP7,505
Median age39.2This ZIP39.2New York39.8US 38.9
Median household income$121,026This ZIP$121,026New York$85,974US $80,734
Median home value$503,000This ZIP$503,000New York$423,800US $332,700
Median gross rent$1,996This ZIP$1,996New York$1,621US $1,413
Bachelor's degree or higher45.9%This ZIP45.9%
Mean commute28.3 minThis ZIP28.3 min
Population density5,612.9 / sq miThis ZIP5,612.9 / sq mi

Business and tax activity

Business establishments541This ZIP541
Employees5,785This ZIP5,785
Annual payroll$413,478,000This ZIP$413,478,000
Tax returns filed9,970This ZIP9,970
Total adjusted gross income$978,332,000This ZIP$978,332,000

Land area

Land area3.37 sq miThis ZIP3.37 sq mi
Water area0.01 sq miThis ZIP0.01 sq mi

Other place names in 10603

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

ZIP codes near 10603

ZIPCityDistance
10602 White Plains, NY 1.7 mi
10601 White Plains, NY 1.7 mi
10607 White Plains, NY 1.9 mi
10523 Elmsford, NY 2.1 mi
10604 West Harrison, NY 2.1 mi
10595 Valhalla, NY 2.3 mi
10606 White Plains, NY 2.3 mi
10530 Hartsdale, NY 2.7 mi
10532 Hawthorne, NY 3.4 mi
10605 White Plains, NY 3.5 mi

Find every ZIP code within 10 miles of 10603 →

Questions about this ZIP code

Where is ZIP code 10603?

10603 is in White Plains, New York, in Westchester County, part of the New York-Newark-Jersey City, NY-NJ metropolitan area. Its published point location is 41.0542, -73.7802.

What county is 10603 in?

10603 lies in Westchester County.

What time zone is 10603 in?

10603 uses America/New_York.

How many people live in 10603?

About 18,910 people live in ZIP code 10603, in 7,128 households, at 5,612.9 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 10603?

$121,026 a year, against $85,974 across New York.

What ZIP codes are near 10603?

The closest are 10602 (1.7 mi), 10601 (1.7 mi), 10607 (1.9 mi), 10523 (2.1 mi) and 10604 (2.1 mi).

Is 10603 a PO Box ZIP code?

10603 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “10603 ZIP Code — White Plains, New York (Westchester County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/10603

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