ZIP Code 10604

10604 is one of New York's ZIP codes, delivering to addresses in West Harrison, Westchester County.

City: West Harrison
County: Westchester County
State: New York
Prefix: 106xx

Where this code sits

10604 is part of the 106xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to West Harrison.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 10604 delivers to without sharing its boundary.

ZIP codes nearest 10604

The ZIP codes whose reference points sit closest to 10604.
ZIP code	Distance	Delivers to
ZIP code 10577	1.9 mi	Purchase, NY
ZIP code 10603	2.1 mi	White Plains, NY
ZIP code 10602	2.1 mi	White Plains, NY
ZIP code 10601	2.3 mi	White Plains, NY
ZIP code 10595	2.7 mi	Valhalla, NY
ZIP code 10606	3.1 mi	White Plains, NY
ZIP code 10605	3.2 mi	White Plains, NY
ZIP code 10523	3.9 mi	Elmsford, 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 10604, plotted from its record coordinates.

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

Scope ZIP code 10604. 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.