ZIP Code 13666

13666 is one of New York's ZIP codes, delivering to addresses in Newton Falls, St. Lawrence County.

City: Newton Falls
County: St. Lawrence County
State: New York
Prefix: 136xx

Where this code sits

13666 is part of the 136xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Newton Falls.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 13666 delivers to without sharing its boundary.

ZIP codes nearest 13666

The ZIP codes whose reference points sit closest to 13666.
ZIP code	Distance	Delivers to
ZIP code 12927	4.2 mi	Cranberry Lake, NY
ZIP code 13695	5.5 mi	Wanakena, NY
ZIP code 13690	6.1 mi	Star Lake, NY
ZIP code 13670	6.3 mi	Oswegatchie, NY
ZIP code 13639	10 mi	Fine, NY
ZIP code 13684	14 mi	Russell, NY
ZIP code 12922	14 mi	Childwold, NY
ZIP code 13635	17 mi	Edwards, 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 13666, plotted from its record coordinates.

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

Scope ZIP code 13666. 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.