ZIP Code 11783

11783 is one of New York's ZIP codes, delivering to addresses in Seaford, Nassau County.

City: Seaford
County: Nassau County
State: New York
Prefix: 117xx

Where this code sits

11783 is part of the 117xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Seaford.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 11783 delivers to without sharing its boundary.

ZIP codes nearest 11783

The ZIP codes whose reference points sit closest to 11783.
ZIP code	Distance	Delivers to
ZIP code 11793	1.1 mi	Wantagh, NY
ZIP code 11758	1.9 mi	Massapequa, NY
ZIP code 11710	2.4 mi	Bellmore, NY
ZIP code 11762	2.4 mi	Massapequa Park, NY
ZIP code 11566	3.4 mi	Merrick, NY
ZIP code 11756	3.4 mi	Levittown, NY
ZIP code 11701	3.9 mi	Amityville, NY
ZIP code 11714	4.2 mi	Bethpage, 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 11783, plotted from its record coordinates.

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

Scope ZIP code 11783. 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.