ZIP Code 11784

11784 is one of New York's ZIP codes, delivering to addresses in Selden, Suffolk County.

City: Selden
County: Suffolk County
State: New York
Prefix: 117xx

Where this code sits

11784 is part of the 117xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Selden.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 11784 delivers to without sharing its boundary.

ZIP codes nearest 11784

The ZIP codes whose reference points sit closest to 11784.
ZIP code	Distance	Delivers to
ZIP code 11720	2.0 mi	Centereach, NY
ZIP code 11727	2.2 mi	Coram, NY
ZIP code 11738	2.3 mi	Farmingville, NY
ZIP code 11776	3.0 mi	Port Jefferson Station, NY
ZIP code 00501	3.8 mi	Holtsville, NY
ZIP code 00544	3.8 mi	Holtsville, NY
ZIP code 11755	3.9 mi	Lake Grove, NY
ZIP code 11742	4.1 mi	Holtsville, 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 11784, plotted from its record coordinates.

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

Scope ZIP code 11784. 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.