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Where 11749 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.
- 🔢 Type 11749 into a pocket calculator and turn it upside down: GhLII — not quite a word, sorry.
- ➕ As a number, 11,749 = 31 × 379. Its digits add up to 22, a total 2,607 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10110111100101 - 🏠 Its numerical neighbours: 11747 (Melville, NY, 13 mi away) and 11751 (Islip, NY, 6 mi away).
- 🔄 Backwards, 11749 becomes 94711, which is not a ZIP code at all.
- 👥 24 other ZIP codes are made of exactly the same digits (11794, 11947, 14719, 17941, 19147, 19714, …). The farthest-flung twin is 94117 in San Francisco, CA, 2,609 miles away.
- 🧭 Farther north than 65% of all ZIP codes, and farther east than 93%.
- 🎯1,336 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 11749 and you would come out at 40.81°S, 106.83°E — 791 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 15h 06m of daylight. Shortest: 9h 14m.
- 📏 At 2.2 square miles of land, 11749 is bigger than 12% of ZIP codes — room for about 1.7 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 3,600This ZIP3,600 |
|---|---|
| Households | 1,217This ZIP1,217 |
| Housing units | 1,288This ZIP1,288 |
| Median age | 43.3This ZIP43.3New York39.8US 38.9 |
| Median household income | $116,313This ZIP$116,313New York$85,974US $80,734 |
| Median home value | $477,400This ZIP$477,400New York$423,800US $332,700 |
| Median gross rent | $2,019This ZIP$2,019New York$1,621US $1,413 |
| Bachelor's degree or higher | 32.5%This ZIP32.5% |
| Mean commute | 30.3 minThis ZIP30.3 min |
| Population density | 1,646.1 / sq miThis ZIP1,646.1 / sq mi |
Business and tax activity
| Business establishments | 399This ZIP399 |
|---|---|
| Employees | 8,492This ZIP8,492 |
| Annual payroll | $550,788,000This ZIP$550,788,000 |
| Tax returns filed | 1,910This ZIP1,910 |
| Total adjusted gross income | $143,736,000This ZIP$143,736,000 |
Land area
| Land area | 2.19 sq miThis ZIP2.19 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 11749
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 11749
| ZIP | City | Distance |
|---|---|---|
11722 | Central Islip, NY | 2.1 mi |
11788 | Hauppauge, NY | 2.4 mi |
11716 | Bohemia, NY | 2.8 mi |
11779 | Ronkonkoma, NY | 3.0 mi |
11767 | Nesconset, NY | 3.1 mi |
11752 | Islip Terrace, NY | 3.4 mi |
11787 | Smithtown, NY | 3.8 mi |
11755 | Lake Grove, NY | 4.5 mi |
11717 | Brentwood, NY | 4.5 mi |
11741 | Holbrook, NY | 5.3 mi |
Find every ZIP code within 10 miles of 11749 →
Questions about this ZIP code
Where is ZIP code 11749?
11749 is in Islandia, New York, in Suffolk County, part of the New York-Newark-Jersey City, NY-NJ metropolitan area. Its published point location is 40.8068, -73.1708.
What county is 11749 in?
11749 lies in Suffolk County.
What area code is 11749?
Islandia uses area codes 631, 516 and 934, from NANPA's telephone records.
What time zone is 11749 in?
11749 uses America/New_York.
How many people live in 11749?
About 3,600 people live in ZIP code 11749, in 1,217 households, at 1,646.1 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 11749?
$116,313 a year, against $85,974 across New York.
What ZIP codes are near 11749?
The closest are 11722 (2.1 mi), 11788 (2.4 mi), 11716 (2.8 mi), 11779 (3 mi) and 11767 (3.1 mi).
Is 11749 a PO Box ZIP code?
11749 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “11749 ZIP Code — Islandia, New York (Suffolk County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/11749
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/11749.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.