ZIP Code 12456

12456 is one of New York's ZIP codes, delivering to addresses in Mount Marion, Ulster County.

City: Mount Marion
County: Ulster County
State: New York
Prefix: 124xx

Where this code sits

12456 is part of the 124xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Mount Marion.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 12456 delivers to without sharing its boundary.

ZIP codes nearest 12456

The ZIP codes whose reference points sit closest to 12456.
ZIP code	Distance	Delivers to
ZIP code 12475	1.3 mi	Ruby, NY
ZIP code 12432	2.8 mi	Glasco, NY
ZIP code 12477	2.8 mi	Saugerties, NY
ZIP code 12449	3.1 mi	Lake Katrine, NY
ZIP code 12507	4.8 mi	Barrytown, NY
ZIP code 12504	5.0 mi	Annandale On Hudson, NY
ZIP code 12583	5.2 mi	Tivoli, NY
ZIP code 12453	5.5 mi	Malden On Hudson, 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 12456, plotted from its record coordinates.

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

Scope ZIP code 12456. 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.