In which county is ZIP code 11721 located?

ZIP 11721 is listed under Suffolk, NY.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 11721: Centerport, NY

ZIP: 11721

County: Suffolk

Coordinates: 40.89290, -73.37540

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Get a reliable snapshot of the Centerport, NY postal area 11721. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Centerport
ZIP Code	11721
County	Suffolk
State	NY
Latitude / Longitude	40.89290, -73.37540
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 11721 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 11721 is commonly represented around 40.89290, -73.37540. These coordinates help identify the general area within Suffolk, NY.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 11721 for mail delivery and general location reference in Suffolk, NY.

Some addresses near Centerport may share this ZIP due to delivery routing and local service areas.

Related ZIP Codes (Nearby)

Explore other postal codes near Centerport within NY.

Frequently Asked Questions

What is the primary city for ZIP code 11721?

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

In which county is 11721 located?

ZIP code 11721 is situated within Suffolk, NY.

What are the coordinates for 11721?

The approximate center point is 40.89290 (Latitude) and -73.37540 (Longitude).

Is ZIP code 11721 active?

This page lists ZIP 11721 as Listed based on the latest refresh date shown above.

Does ZIP 11721 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