ZIP Code 13620

13620 is one of New York's ZIP codes, delivering to addresses in Castorland, Lewis County.

City: Castorland
County: Lewis County
State: New York
Prefix: 136xx

Where this code sits

13620 is part of the 136xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Castorland.

Castorland New York ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 13620 delivers to without sharing its boundary.

ZIP codes nearest 13620

The ZIP codes whose reference points sit closest to 13620.
ZIP code	Distance	Delivers to
ZIP code 13305	1.7 mi	Beaver Falls, NY
ZIP code 13327	5.6 mi	Croghan, NY
ZIP code 13631	6.2 mi	Denmark, NY
ZIP code 13367	6.9 mi	Lowville, NY
ZIP code 13627	7.1 mi	Deer River, NY
ZIP code 13619	9.6 mi	Carthage, NY
ZIP code 13404	10 mi	Martinsburg, NY
ZIP code 13626	11 mi	Copenhagen, 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 13620, plotted from its record coordinates.

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

Scope ZIP code 13620. 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.