In which county is ZIP code 11556 located?

ZIP 11556 is listed under Nassau, NY.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 11556: Uniondale, NY

ZIP: 11556

County: Nassau

Coordinates: 40.75480, -73.60180

ZIP Type: Standard

Time Zone: Eastern Time (ET)

This profile provides an in-depth look at ZIP code 11556, serving Uniondale in NY. It lies in Nassau and supports delivery, planning, and address verification.

Primary City	Uniondale
ZIP Code	11556
County	Nassau
State	NY
Latitude / Longitude	40.75480, -73.60180
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 11556 (not an exact boundary).

Geographic & Administrative Context

The geographic center of ZIP code 11556 is approximately 40.75480 (latitude) and -73.60180 (longitude). This location sits within Nassau, contributing to regional planning across NY.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 11556 for mail delivery and general location reference in Nassau, NY.

Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Uniondale.

Related ZIP Codes (Nearby)

Explore other postal codes near Uniondale within NY.

Frequently Asked Questions

What is the primary city for ZIP code 11556?

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

In which county is 11556 located?

ZIP code 11556 is situated within Nassau, NY.

What are the coordinates for 11556?

The approximate center point is 40.75480 (Latitude) and -73.60180 (Longitude).

Is ZIP code 11556 active?

This page lists ZIP 11556 as Listed based on the latest refresh date shown above.

Does ZIP 11556 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