ZIP Code 12784

12784 is one of New York's ZIP codes, delivering to addresses in Thompsonville, Sullivan County.

City: Thompsonville
County: Sullivan County
State: New York
Prefix: 127xx

Where this code sits

12784 is part of the 127xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Thompsonville.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 12784 delivers to without sharing its boundary.

ZIP codes nearest 12784

The ZIP codes whose reference points sit closest to 12784.
ZIP code	Distance	Delivers to
ZIP code 12738	2.4 mi	Glen Wild, NY
ZIP code 12751	2.7 mi	Kiamesha Lake, NY
ZIP code 12779	2.7 mi	South Fallsburg, NY
ZIP code 12701	4.1 mi	Monticello, NY
ZIP code 12789	4.1 mi	Woodridge, NY
ZIP code 12733	4.1 mi	Fallsburg, NY
ZIP code 12775	4.3 mi	Rock Hill, NY
ZIP code 12763	4.9 mi	Mountain Dale, 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 12784, plotted from its record coordinates.

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

Scope ZIP code 12784. 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.