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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/10520

10520

ZIP 10520 is in Croton On Hudson, New York, in Westchester County; area code 914; Eastern time. Croton On Hudson has 2 ZIP codes; the other is 10521.

Type
Standard
Time zone
America/New_York
County
Westchester
Population
12,368
Coordinates
41.2266, -73.8676
☼ Live from 10520 — Croton On Hudson, NY

Weather right now

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Local time: —

Where 10520 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 10520
  • 🔢 Type 10520 into a pocket calculator and turn it upside down: OZSOI — not quite a word, sorry.
  • ➕ As a number, 10,520 = 2 × 2 × 2 × 5 × 263. Its digits add up to 8, a total 251 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10100100011000
  • 🏠 Its numerical neighbours: 10519 (Croton Falls, NY, 13 mi away) and 10521 (Croton On Hudson, NY, 3 mi away).
  • 🔄 Backwards, 10520 becomes 02501, which is not a ZIP code at all.
  • 👥 23 other ZIP codes are made of exactly the same digits (01520, 02051, 02150, 05201, 10025, 10502, …). The farthest-flung twin is 51020 in Galva, IA, 1,109 miles away.
  • 🧭 Farther north than 69% of all ZIP codes, and farther east than 91%.
  • 🎯1,297 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 10520 and you would come out at 41.23°S, 106.13°E — 837 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 09m of daylight. Shortest: 9h 12m.
  • 📏 At 14.4 square miles of land, 10520 is bigger than 32% of ZIP codes — room for about 11 Central Parks.
🌙 The sky over 10520 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population12,368This ZIP12,368
Households5,058This ZIP5,058
Housing units5,553This ZIP5,553
Median age48.7This ZIP48.7New York39.8US 38.9
Median household income$142,791This ZIP$142,791New York$85,974US $80,734
Median home value$702,200This ZIP$702,200New York$423,800US $332,700
Median gross rent$2,002This ZIP$2,002New York$1,621US $1,413
Bachelor's degree or higher63.4%This ZIP63.4%
Mean commute40.7 minThis ZIP40.7 min
Population density856.0 / sq miThis ZIP856.0 / sq mi

Business and tax activity

Business establishments412This ZIP412
Employees3,020This ZIP3,020
Annual payroll$151,728,000This ZIP$151,728,000
Tax returns filed6,420This ZIP6,420
Total adjusted gross income$1,152,683,000This ZIP$1,152,683,000

Land area

Land area14.45 sq miThis ZIP14.45 sq mi
Water area1.37 sq miThis ZIP1.37 sq mi

Other place names in 10520

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

ZIP codes near 10520

ZIPCityDistance
10521 Croton On Hudson, NY 3.1 mi
10562 Ossining, NY 3.1 mi
10545 Maryknoll, NY 3.7 mi
10548 Montrose, NY 3.9 mi
10546 Millwood, NY 4.1 mi
10567 Cortlandt Manor, NY 4.5 mi
10511 Buchanan, NY 4.7 mi
10517 Crompond, NY 5.0 mi
10566 Peekskill, NY 5.0 mi
10596 Verplanck, NY 5.2 mi

Find every ZIP code within 10 miles of 10520 →

Questions about this ZIP code

Where is ZIP code 10520?

10520 is in Croton On Hudson, New York, in Westchester County, part of the New York-Newark-Jersey City, NY-NJ metropolitan area. Its published point location is 41.2266, -73.8676.

What county is 10520 in?

10520 lies in Westchester County.

What area code is 10520?

Croton On Hudson uses area code 914, from NANPA's telephone records.

What time zone is 10520 in?

10520 uses America/New_York.

How many people live in 10520?

About 12,368 people live in ZIP code 10520, in 5,058 households, at 856.0 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 10520?

$142,791 a year, against $85,974 across New York.

What ZIP codes are near 10520?

The closest are 10521 (3.1 mi), 10562 (3.1 mi), 10545 (3.7 mi), 10548 (3.9 mi) and 10546 (4.1 mi).

Is 10520 a PO Box ZIP code?

10520 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “10520 ZIP Code — Croton On Hudson, New York (Westchester County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/10520

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