In which county is ZIP code 11749 located?

ZIP 11749 is listed under Suffolk, NY.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 11749: Islandia, NY

ZIP: 11749

County: Suffolk

Coordinates: 40.80670, -73.17090

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Explore detailed information for ZIP code 11749 in Islandia, NY. We include verified county details for Suffolk plus key geographic references used for mapping and logistics.

Primary City	Islandia
ZIP Code	11749
County	Suffolk
State	NY
Latitude / Longitude	40.80670, -73.17090
ZIP Type	Standard
Time Zone	Eastern Time (ET)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 11749 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 11749 are listed as 40.80670 / -73.17090, useful for GPS and service checks in and around Islandia, NY.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 11749 for mail delivery and general location reference in Suffolk, NY.

This ZIP may extend beyond the city core into nearby communities within Suffolk.

Related ZIP Codes (Nearby)

Explore other postal codes near Islandia within NY.

Frequently Asked Questions

What is the primary city for ZIP code 11749?

The primary city for this ZIP code is Islandia, located in NY.

In which county is 11749 located?

ZIP code 11749 is situated within Suffolk, NY.

What are the coordinates for 11749?

The approximate center point is 40.80670 (Latitude) and -73.17090 (Longitude).

Is ZIP code 11749 active?

This page lists ZIP 11749 as Listed based on the latest refresh date shown above.

Does ZIP 11749 cover multiple areas?

Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.

Methodology & Data Notes

How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.

Page updated: 2026-01-08