ZIP Code 11951

11951 is one of New York's ZIP codes, delivering to addresses in Mastic Beach, Suffolk County.

City: Mastic Beach
County: Suffolk County
State: New York
Prefix: 119xx

Where this code sits

11951 is part of the 119xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Mastic Beach.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 11951 delivers to without sharing its boundary.

ZIP codes nearest 11951

The ZIP codes whose reference points sit closest to 11951.
ZIP code	Distance	Delivers to
ZIP code 11719	2.4 mi	Brookhaven, NY
ZIP code 11967	2.6 mi	Shirley, NY
ZIP code 11950	2.8 mi	Mastic, NY
ZIP code 11955	3.4 mi	Moriches, NY
ZIP code 11934	3.8 mi	Center Moriches, NY
ZIP code 11713	4.9 mi	Bellport, NY
ZIP code 11980	5.9 mi	Yaphank, NY
ZIP code 11949	6.0 mi	Manorville, 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 11951, plotted from its record coordinates.

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

Scope ZIP code 11951. 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.