ZIP Code 11803

11803 is one of New York's ZIP codes, delivering to addresses in Plainview, Nassau County.

City: Plainview
County: Nassau County
State: New York
Prefix: 118xx

Where this code sits

11803 is part of the 118xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Plainview.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 11803 delivers to without sharing its boundary.

ZIP codes nearest 11803

The ZIP codes whose reference points sit closest to 11803.
ZIP code	Distance	Delivers to
ZIP code 11804	1.6 mi	Old Bethpage, NY
ZIP code 11802	2.4 mi	Hicksville, NY
ZIP code 11819	2.4 mi	Hicksville, NY
ZIP code 11801	2.4 mi	Hicksville, NY
ZIP code 11797	2.6 mi	Woodbury, NY
ZIP code 11714	2.6 mi	Bethpage, NY
ZIP code 11791	2.7 mi	Syosset, NY
ZIP code 11753	2.8 mi	Jericho, 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 11803, plotted from its record coordinates.

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

Scope ZIP code 11803. 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.