ZIP Code 12783

12783 is one of New York's ZIP codes, delivering to addresses in Swan Lake, Sullivan County.

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

Where this code sits

12783 is part of the 127xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Swan Lake.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 12783 delivers to without sharing its boundary.

ZIP codes nearest 12783

The ZIP codes whose reference points sit closest to 12783.
ZIP code	Distance	Delivers to
ZIP code 12749	2.8 mi	Kauneonga Lake, NY
ZIP code 12762	3.7 mi	Mongaup Valley, NY
ZIP code 12778	4.7 mi	Smallwood, NY
ZIP code 12787	5.0 mi	White Sulphur Springs, NY
ZIP code 12720	5.1 mi	Bethel, NY
ZIP code 12734	5.2 mi	Ferndale, NY
ZIP code 12748	5.6 mi	Jeffersonville, NY
ZIP code 12742	5.6 mi	Harris, 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 12783, plotted from its record coordinates.

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

Scope ZIP code 12783. 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.