ZIP Code 12033

12033 is one of New York's ZIP codes, delivering to addresses in Castleton On Hudson, Rensselaer County.

City: Castleton On Hudson
County: Rensselaer County
State: New York
Prefix: 120xx

Where this code sits

12033 is part of the 120xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Castleton On Hudson.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 12033 delivers to without sharing its boundary.

ZIP codes nearest 12033

The ZIP codes whose reference points sit closest to 12033.
ZIP code	Distance	Delivers to
ZIP code 12061	4.2 mi	East Greenbush, NY
ZIP code 12156	4.4 mi	Schodack Landing, NY
ZIP code 12063	4.4 mi	East Schodack, NY
ZIP code 12123	4.9 mi	Nassau, NY
ZIP code 12158	5.4 mi	Selkirk, NY
ZIP code 12132	6.1 mi	North Chatham, NY
ZIP code 12077	6.1 mi	Glenmont, NY
ZIP code 12045	6.3 mi	Coeymans, 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 12033, plotted from its record coordinates.

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

Scope ZIP code 12033. 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.