ZIP Code 11555

11555 is one of New York's ZIP codes, delivering to addresses in Uniondale, Nassau County.

City: Uniondale
County: Nassau County
State: New York
Prefix: 115xx

Where this code sits

11555 is part of the 115xx range, the group of codes handled by one mail processing centre. Uniondale is served by 3 ZIP codes in total.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 11555 delivers to without sharing its boundary.

ZIP codes nearest 11555

The ZIP codes whose reference points sit closest to 11555.
ZIP code	Distance	Delivers to
ZIP code 11553	0.1 mi	Uniondale, NY
ZIP code 11549	1.3 mi	Hempstead, NY
ZIP code 11550	1.3 mi	Hempstead, NY
ZIP code 11551	1.4 mi	Hempstead, NY
ZIP code 11575	1.4 mi	Roosevelt, NY
ZIP code 11554	2.2 mi	East Meadow, NY
ZIP code 11531	2.8 mi	Garden City, NY
ZIP code 11599	2.8 mi	Garden City, 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 11555, plotted from its record coordinates.

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

Scope ZIP code 11555. 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.