Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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/10542

10542

ZIP 10542 is Mahopac Falls, New York, in Putnam County; area codes 845, 914 and 329; Eastern time.

Type
Standard
Time zone
America/New_York
County
Putnam
Population
0
Coordinates
41.3711, -73.7644
☼ Live from 10542 — Mahopac Falls, NY

Weather right now

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Local time: —

Where 10542 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 10542
  • 🔢 Type 10542 into a pocket calculator and turn it upside down: ZhSOI — not quite a word, sorry.
  • ➕ As a number, 10,542 = 2 × 3 × 7 × 251. Its digits add up to 12, a total 940 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10100100101110
  • 🏠 Its numerical neighbours: 10541 (Mahopac, NY, 1 mi away) and 10543 (Mamaroneck, NY, 29 mi away).
  • 🔄 Backwards, 10542 becomes 24501 — and that is a real ZIP code: Lynchburg, VA, 399 miles away.
  • 👥 73 other ZIP codes are made of exactly the same digits (01245, 01254, 01452, 01524, 01542, 02145, …). The farthest-flung twin is 51240 in Inwood, IA, 1,163 miles away.
  • 🧭 Farther north than 70% 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 10542 and you would come out at 41.37°S, 106.24°E — 840 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 10m of daylight. Shortest: 9h 11m.
  • 📏 At 0.029 square miles of land, 10542 is bigger than 0% of ZIP codes — about 14 football fields.
🌙 The sky over 10542 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population0
Households0
Housing units0
Population density0.0 / sq mi

Business and tax activity

Business establishments11This ZIP11
Employees81This ZIP81
Annual payroll$3,549,000This ZIP$3,549,000

Land area

Land area0.03 sq miThis ZIP0.03 sq mi
Water area0.00 sq mi

Other place names in 10542

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

ZIP codes near 10542

ZIPCityDistance
10541 Mahopac, NY 1.0 mi
10505 Baldwin Place, NY 2.2 mi
10535 Jefferson Valley, NY 2.9 mi
10587 Shenorock, NY 3.1 mi
10527 Granite Springs, NY 3.5 mi
10540 Lincolndale, NY 3.7 mi
10579 Putnam Valley, NY 4.2 mi
10588 Shrub Oak, NY 4.3 mi
10589 Somers, NY 4.6 mi
10501 Amawalk, NY 5.2 mi

Find every ZIP code within 10 miles of 10542 →

Questions about this ZIP code

Where is ZIP code 10542?

10542 is in Mahopac Falls, New York, in Putnam County, part of the New York-Newark-Jersey City, NY-NJ metropolitan area. Its published point location is 41.3711, -73.7644.

What county is 10542 in?

10542 lies in Putnam County.

What area code is 10542?

Mahopac Falls uses area codes 845, 914 and 329, from NANPA's telephone records.

What time zone is 10542 in?

10542 uses America/New_York.

How many people live in 10542?

About 0 people live in ZIP code 10542. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What ZIP codes are near 10542?

The closest are 10541 (1 mi), 10505 (2.2 mi), 10535 (2.9 mi), 10587 (3.1 mi) and 10527 (3.5 mi).

Is 10542 a PO Box ZIP code?

10542 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “10542 ZIP Code — Mahopac Falls, New York (Putnam County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/10542

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