ZIP Code 12955

12955 is one of New York's ZIP codes, delivering to addresses in Lyon Mountain, Clinton County.

City: Lyon Mountain
County: Clinton County
State: New York
Prefix: 129xx

Where this code sits

12955 is part of the 129xx range, the group of codes handled by one mail processing centre. Lyon Mountain is served by 2 ZIP codes in total.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 12955 delivers to without sharing its boundary.

ZIP codes nearest 12955

The ZIP codes whose reference points sit closest to 12955.
ZIP code	Distance	Delivers to
ZIP code 12915	4.7 mi	Brainardsville, NY
ZIP code 12934	5.8 mi	Ellenburg Center, NY
ZIP code 12952	6.0 mi	Lyon Mountain, NY
ZIP code 12920	8.8 mi	Chateaugay, NY
ZIP code 12933	9.1 mi	Ellenburg, NY
ZIP code 12969	9.4 mi	Owls Head, NY
ZIP code 12923	9.8 mi	Churubusco, NY
ZIP code 12935	12 mi	Ellenburg Depot, 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 12955, plotted from its record coordinates.

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

Scope ZIP code 12955. 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.