In which county is ZIP code 11555 located?

ZIP 11555 is listed under Nassau, NY.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 11555: Uniondale, NY

ZIP: 11555

County: Nassau

Coordinates: 40.70040, -73.59290

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Get a reliable snapshot of the Uniondale, NY postal area 11555. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Uniondale
ZIP Code	11555
County	Nassau
State	NY
Latitude / Longitude	40.70040, -73.59290
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 11555 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 11555 is commonly represented around 40.70040, -73.59290. These coordinates help identify the general area within Nassau, NY.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 11555 for mail delivery and general location reference in Nassau, NY.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Uniondale within NY.

Frequently Asked Questions

What is the primary city for ZIP code 11555?

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

In which county is 11555 located?

ZIP code 11555 is situated within Nassau, NY.

What are the coordinates for 11555?

The approximate center point is 40.70040 (Latitude) and -73.59290 (Longitude).

Is ZIP code 11555 active?

This page lists ZIP 11555 as Listed based on the latest refresh date shown above.

Does ZIP 11555 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