ZIP Code 12743

12743 is one of New York's ZIP codes, delivering to addresses in Highland Lake, Sullivan County.

City: Highland Lake
County: Sullivan County
State: New York
Prefix: 127xx

Where this code sits

12743 is part of the 127xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Highland Lake.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 12743 delivers to without sharing its boundary.

ZIP codes nearest 12743

The ZIP codes whose reference points sit closest to 12743.
ZIP code	Distance	Delivers to
ZIP code 12732	2.3 mi	Eldred, NY
ZIP code 12737	4.1 mi	Glen Spey, NY
ZIP code 12792	4.2 mi	Yulan, NY
ZIP code 12719	4.3 mi	Barryville, NY
ZIP code 12770	5.5 mi	Pond Eddy, NY
ZIP code 12777	7.1 mi	Forestburgh, NY
ZIP code 18435	7.7 mi	Lackawaxen, PA
ZIP code 12786	8.2 mi	White Lake, 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 12743, plotted from its record coordinates.

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

Scope ZIP code 12743. 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.