ZIP Code 25661

25661 is one of West Virginia's ZIP codes, delivering to addresses in Williamson, Mingo County.

City: Williamson
County: Mingo County
State: West Virginia
Prefix: 256xx

Where this code sits

25661 is part of the 256xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Williamson.

Williamson West Virginia ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 25661 delivers to without sharing its boundary.

ZIP codes nearest 25661

The ZIP codes whose reference points sit closest to 25661.
ZIP code	Distance	Delivers to
ZIP code 25667	1.1 mi	Chattaroy, WV
ZIP code 41503	2.1 mi	South Williamson, KY
ZIP code 25665	3.2 mi	Borderland, WV
ZIP code 41514	3.5 mi	Belfry, KY
ZIP code 25691	3.7 mi	Rawl, WV
ZIP code 41527	3.8 mi	Forest Hills, KY
ZIP code 25670	4.4 mi	Delbarton, WV
ZIP code 41535	6.5 mi	Huddy, KY

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 25661, plotted from its record coordinates.

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

Scope ZIP code 25661. 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.