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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/11965

11965

ZIP 11965 is Shelter Island Heights, New York, in Suffolk County; area codes 631 and 934; Eastern time.

Type
Standard
Time zone
America/New_York
County
Suffolk
Population
404
Coordinates
41.0825, -72.3034
☼ Live from 11965 — Shelter Island Heights, NY

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Local time: —

Where 11965 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 11965
  • 🔢 Type 11965 into a pocket calculator and turn it upside down: SgGII — not quite a word, sorry.
  • ➕ As a number, 11,965 = 5 × 2393. Its digits add up to 22, a total 2,607 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111010111101
  • 🏠 Its numerical neighbours: 11964 (Shelter Island, NY, 2 mi away) and 11967 (Shirley, NY, 36 mi away).
  • 🔄 Backwards, 11965 becomes 56911, which is not a ZIP code at all.
  • 👥 22 other ZIP codes are made of exactly the same digits (11569, 11596, 11695, 11956, 15619, 15691, …). The farthest-flung twin is 96511 in FPO AA, a military post office, 6,998 miles away.
  • 🧭 Farther north than 67% of all ZIP codes, and farther east than 94%.
  • 🎯1,379 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 11965 and you would come out at 41.08°S, 107.70°E — 776 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 08m of daylight. Shortest: 9h 13m.
  • 📏 At 2.7 square miles of land, 11965 is bigger than 14% of ZIP codes — room for about 2.1 Central Parks.
🌙 The sky over 11965 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population404This ZIP404
Households249This ZIP249
Housing units710This ZIP710
Median age61.6This ZIP61.6New York39.8US 38.9
Median home value$1,113,600This ZIP$1,113,600New York$423,800US $332,700
Bachelor's degree or higher83.8%This ZIP83.8%
Population density147.4 / sq miThis ZIP147.4 / sq mi

Business and tax activity

Business establishments51This ZIP51
Employees326This ZIP326
Annual payroll$26,911,000This ZIP$26,911,000

Land area

Land area2.74 sq miThis ZIP2.74 sq mi
Water area7.15 sq miThis ZIP7.15 sq mi

Other place names in 11965

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

ZIP codes near 11965

ZIPCityDistance
11964 Shelter Island, NY 2.3 mi
11944 Greenport, NY 3.9 mi
11939 East Marion, NY 4.0 mi
11963 Sag Harbor, NY 5.6 mi
11971 Southold, NY 6.7 mi
11937 East Hampton, NY 8.2 mi
11958 Peconic, NY 8.9 mi
11975 Wainscott, NY 9.7 mi
11935 Cutchogue, NY 10.5 mi
11962 Sagaponack, NY 10.6 mi

Find every ZIP code within 10 miles of 11965 →

Questions about this ZIP code

Where is ZIP code 11965?

11965 is in Shelter Island Heights, New York, in Suffolk County, part of the New York-Newark-Jersey City, NY-NJ metropolitan area. Its published point location is 41.0825, -72.3034.

What county is 11965 in?

11965 lies in Suffolk County.

What area code is 11965?

Shelter Island Heights uses area codes 631 and 934, from NANPA's telephone records.

What time zone is 11965 in?

11965 uses America/New_York.

How many people live in 11965?

About 404 people live in ZIP code 11965, in 249 households, at 147.4 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What ZIP codes are near 11965?

The closest are 11964 (2.3 mi), 11944 (3.9 mi), 11939 (4 mi), 11963 (5.6 mi) and 11971 (6.7 mi).

Is 11965 a PO Box ZIP code?

11965 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “11965 ZIP Code — Shelter Island Heights, New York (Suffolk County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/11965

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