ZIP Code 13638

13638 is one of New York's ZIP codes, delivering to addresses in Felts Mills, Jefferson County.

City: Felts Mills
County: Jefferson County
State: New York
Prefix: 136xx

Where this code sits

13638 is part of the 136xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Felts Mills.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 13638 delivers to without sharing its boundary.

ZIP codes nearest 13638

The ZIP codes whose reference points sit closest to 13638.
ZIP code	Distance	Delivers to
ZIP code 13602	1.0 mi	Fort Drum, NY
ZIP code 13643	1.9 mi	Great Bend, NY
ZIP code 13612	2.4 mi	Black River, NY
ZIP code 13628	3.6 mi	Deferiet, NY
ZIP code 13616	4.9 mi	Calcium, NY
ZIP code 13637	5.7 mi	Evans Mills, NY
ZIP code 13619	8.0 mi	Carthage, NY
ZIP code 13601	8.6 mi	Watertown, 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 13638, plotted from its record coordinates.

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

Scope ZIP code 13638. 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.