ZIP Code 10543

10543 is one of New York's ZIP codes, delivering to addresses in Mamaroneck, Westchester County.

City: Mamaroneck
County: Westchester County
State: New York
Prefix: 105xx

Where this code sits

10543 is part of the 105xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Mamaroneck.

Mamaroneck New York ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 10543 delivers to without sharing its boundary.

914 Area code 914

ZIP codes nearest 10543

The ZIP codes whose reference points sit closest to 10543.
ZIP code	Distance	Delivers to
ZIP code 10528	1.6 mi	Harrison, NY
ZIP code 10538	1.7 mi	Larchmont, NY
ZIP code 10804	2.7 mi	New Rochelle, NY
ZIP code 10580	2.7 mi	Rye, NY
ZIP code 10801	3.7 mi	New Rochelle, NY
ZIP code 10802	3.8 mi	New Rochelle, NY
ZIP code 10709	3.8 mi	Eastchester, NY
ZIP code 10805	4.3 mi	New Rochelle, NY

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 10543, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 10543. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.