In which county is ZIP code 10543 located?

ZIP 10543 is listed under Westchester, NY.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 10543: Mamaroneck, NY

ZIP: 10543

County: Westchester

Coordinates: 40.95250, -73.73500

ZIP Type: Standard

Time Zone: Eastern Time (ET)

This profile provides an in-depth look at ZIP code 10543, serving Mamaroneck in NY. It lies in Westchester and supports delivery, planning, and address verification.

Primary City	Mamaroneck
ZIP Code	10543
County	Westchester
State	NY
Latitude / Longitude	40.95250, -73.73500
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 10543 (not an exact boundary).

Geographic & Administrative Context

The geographic center of ZIP code 10543 is approximately 40.95250 (latitude) and -73.73500 (longitude). This location sits within Westchester, contributing to regional planning across NY.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 10543 for mail delivery and general location reference in Westchester, NY.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Mamaroneck within NY.

Frequently Asked Questions

What is the primary city for ZIP code 10543?

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

In which county is 10543 located?

ZIP code 10543 is situated within Westchester, NY.

What are the coordinates for 10543?

The approximate center point is 40.95250 (Latitude) and -73.73500 (Longitude).

Is ZIP code 10543 active?

This page lists ZIP 10543 as Listed based on the latest refresh date shown above.

Does ZIP 10543 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