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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/11947

11947

ZIP 11947 is Jamesport, New York, in Suffolk County; area codes 631 and 934; Eastern time.

Type
Standard
Time zone
America/New_York
County
Suffolk
Population
148
Coordinates
40.9430, -72.5819
☼ Live from 11947 — Jamesport, NY

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Local time: —

Where 11947 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 11947
  • 🔢 Type 11947 into a pocket calculator and turn it upside down: LhGII — not quite a word, sorry.
  • ➕ As a number, 11,947 = 13 × 919. Its digits add up to 22, a total 2,607 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111010101011
  • 🏠 Its numerical neighbours: 11946 (Hampton Bays, NY, 6 mi away) and 11948 (Laurel, NY, 2 mi away).
  • 🔄 Backwards, 11947 becomes 74911, which is not a ZIP code at all.
  • 👥 24 other ZIP codes are made of exactly the same digits (11749, 11794, 14719, 17941, 19147, 19714, …). The farthest-flung twin is 94117 in San Francisco, CA, 2,637 miles away.
  • 🧭 Farther north than 66% of all ZIP codes, and farther east than 94%.
  • 🎯1,365 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 11947 and you would come out at 40.94°S, 107.42°E — 778 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 07m of daylight. Shortest: 9h 14m.
  • 📏 At 0.034 square miles of land, 11947 is bigger than 0% of ZIP codes — about 16 football fields.
🌙 The sky over 11947 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population148This ZIP148
Households47This ZIP47
Housing units47This ZIP47
Median age30.7This ZIP30.7New York39.8US 38.9
Bachelor's degree or higher48.5%This ZIP48.5%
Population density4,352.9 / sq miThis ZIP4,352.9 / sq mi

Business and tax activity

Business establishments50This ZIP50
Employees230This ZIP230
Annual payroll$9,771,000This ZIP$9,771,000

Land area

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

Other place names in 11947

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

ZIP codes near 11947

ZIPCityDistance
11970 South Jamesport, NY 0.5 mi
11948 Laurel, NY 2.1 mi
11931 Aquebogue, NY 2.2 mi
11901 Riverhead, NY 3.6 mi
11952 Mattituck, NY 4.4 mi
11946 Hampton Bays, NY 6.4 mi
11942 East Quogue, NY 6.5 mi
11956 New Suffolk, NY 6.6 mi
11935 Cutchogue, NY 7.3 mi
11959 Quogue, NY 7.9 mi

Find every ZIP code within 10 miles of 11947 →

Questions about this ZIP code

Where is ZIP code 11947?

11947 is in Jamesport, New York, in Suffolk County, part of the New York-Newark-Jersey City, NY-NJ metropolitan area. Its published point location is 40.9430, -72.5819.

What county is 11947 in?

11947 lies in Suffolk County.

What area code is 11947?

Jamesport uses area codes 631 and 934, from NANPA's telephone records.

What time zone is 11947 in?

11947 uses America/New_York.

How many people live in 11947?

About 148 people live in ZIP code 11947, in 47 households, at 4,352.9 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 11947?

The closest are 11970 (0.5 mi), 11948 (2.1 mi), 11931 (2.2 mi), 11901 (3.6 mi) and 11952 (4.4 mi).

Is 11947 a PO Box ZIP code?

11947 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “11947 ZIP Code — Jamesport, New York (Suffolk County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/11947

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