ZIP Code 10504

10504 is one of New York's ZIP codes, delivering to addresses in Armonk, Westchester County.

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

Where this code sits

10504 is part of the 105xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Armonk.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 10504 delivers to without sharing its boundary.

914 Area code 914

ZIP codes nearest 10504

The ZIP codes whose reference points sit closest to 10504.
ZIP code	Distance	Delivers to
ZIP code 10545	2.0 mi	Maryknoll, NY
ZIP code 10610	2.0 mi	White Plains, NY
ZIP code 10594	4.0 mi	Thornwood, NY
ZIP code 10570	4.4 mi	Pleasantville, NY
ZIP code 10514	4.4 mi	Chappaqua, NY
ZIP code 10549	5.0 mi	Mount Kisco, NY
ZIP code 10506	5.1 mi	Bedford, NY
ZIP code 10595	5.3 mi	Valhalla, 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 10504, plotted from its record coordinates.

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

Scope ZIP code 10504. 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.