ZIP Code 12921

12921 is one of New York's ZIP codes, delivering to addresses in Chazy, Clinton County.

City: Chazy
County: Clinton County
State: New York
Prefix: 129xx

Where this code sits

12921 is part of the 129xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Chazy.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 12921 delivers to without sharing its boundary.

ZIP codes nearest 12921

The ZIP codes whose reference points sit closest to 12921.
ZIP code	Distance	Delivers to
ZIP code 05463	5.5 mi	Isle La Motte, VT
ZIP code 12919	6.1 mi	Champlain, NY
ZIP code 12992	7.0 mi	West Chazy, NY
ZIP code 12979	8.0 mi	Rouses Point, NY
ZIP code 12958	8.2 mi	Mooers, NY
ZIP code 05474	9.2 mi	North Hero, VT
ZIP code 12910	9.3 mi	Altona, NY
ZIP code 12959	12 mi	Mooers Forks, 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 12921, plotted from its record coordinates.

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

Scope ZIP code 12921. 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.