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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/10604

10604

ZIP 10604 is West Harrison, New York, in Westchester County; area code 914; Eastern time.

Type
Standard
Time zone
America/New_York
County
Westchester
Population
12,517
Coordinates
41.0715, -73.7471
☼ Live from 10604 — West Harrison, NY

Weather right now

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NEXRAD radar
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Local time: —

Where 10604 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 10604
  • 🔢 Type 10604 into a pocket calculator and turn it upside down: hOgOI — not quite a word, sorry.
  • ➕ As a number, 10,604 = 2 × 2 × 11 × 241. Its digits add up to 11, a total 714 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10100101101100
  • 🏠 Its numerical neighbours: 10603 (White Plains, NY, 2 mi away) and 10605 (White Plains, NY, 4 mi away).
  • 🔄 Backwards, 10604 becomes 40601 — and that is a real ZIP code: Frankfort, KY, 623 miles away.
  • 👥 28 other ZIP codes are made of exactly the same digits (00614, 00641, 01460, 01604, 04016, 04061, …). The farthest-flung twin is 00641 in Utuado, PR, 1,630 miles away.
  • 🧭 Farther north than 67% of all ZIP codes, and farther east than 91%.
  • 🎯1,304 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 10604 and you would come out at 41.07°S, 106.25°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 6.8 square miles of land, 10604 is bigger than 22% of ZIP codes — room for about 5.1 Central Parks.
🌙 The sky over 10604 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population12,517This ZIP12,517
Households4,517This ZIP4,517
Housing units4,751This ZIP4,751
Median age39.9This ZIP39.9New York39.8US 38.9
Median household income$117,014This ZIP$117,014New York$85,974US $80,734
Median home value$735,700This ZIP$735,700New York$423,800US $332,700
Median gross rent$2,245This ZIP$2,245New York$1,621US $1,413
Bachelor's degree or higher51.1%This ZIP51.1%
Mean commute25.7 minThis ZIP25.7 min
Population density1,853.8 / sq miThis ZIP1,853.8 / sq mi

Business and tax activity

Business establishments624This ZIP624
Employees10,831This ZIP10,831
Annual payroll$1,210,684,000This ZIP$1,210,684,000
Tax returns filed6,220This ZIP6,220
Total adjusted gross income$1,128,038,000This ZIP$1,128,038,000

Land area

Land area6.75 sq miThis ZIP6.75 sq mi
Water area1.30 sq miThis ZIP1.30 sq mi

Other place names in 10604

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

ZIP codes near 10604

ZIPCityDistance
10595 Valhalla, NY 2.1 mi
10603 White Plains, NY 2.1 mi
10602 White Plains, NY 2.7 mi
10601 White Plains, NY 2.8 mi
10577 Purchase, NY 3.0 mi
10594 Thornwood, NY 3.3 mi
10610 White Plains, NY 3.4 mi
10532 Hawthorne, NY 3.4 mi
10606 White Plains, NY 3.8 mi
10523 Elmsford, NY 3.8 mi

Find every ZIP code within 10 miles of 10604 →

Questions about this ZIP code

Where is ZIP code 10604?

10604 is in West Harrison, New York, in Westchester County, part of the New York-Newark-Jersey City, NY-NJ metropolitan area. Its published point location is 41.0715, -73.7471.

What county is 10604 in?

10604 lies in Westchester County.

What area code is 10604?

West Harrison uses area code 914, from NANPA's telephone records.

What time zone is 10604 in?

10604 uses America/New_York.

How many people live in 10604?

About 12,517 people live in ZIP code 10604, in 4,517 households, at 1,853.8 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 10604?

$117,014 a year, against $85,974 across New York.

What ZIP codes are near 10604?

The closest are 10595 (2.1 mi), 10603 (2.1 mi), 10602 (2.7 mi), 10601 (2.8 mi) and 10577 (3 mi).

Is 10604 a PO Box ZIP code?

10604 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “10604 ZIP Code — West Harrison, New York (Westchester County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/10604

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