ZIP Code 18657

18657 is one of Pennsylvania's ZIP codes, delivering to addresses in Tunkhannock, Wyoming County.

City: Tunkhannock
County: Wyoming County
State: Pennsylvania
Prefix: 186xx

Where this code sits

18657 is part of the 186xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Tunkhannock.

Tunkhannock Pennsylvania ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 18657 delivers to without sharing its boundary.

ZIP codes nearest 18657

The ZIP codes whose reference points sit closest to 18657.
ZIP code	Distance	Delivers to
ZIP code 18625	5.3 mi	Lake Winola, PA
ZIP code 18615	6.8 mi	Falls, PA
ZIP code 18630	7.8 mi	Meshoppen, PA
ZIP code 18629	8.2 mi	Mehoopany, PA
ZIP code 18440	9.3 mi	La Plume, PA
ZIP code 18419	9.7 mi	Factoryville, PA
ZIP code 18636	9.8 mi	Noxen, PA
ZIP code 18446	12 mi	Nicholson, PA

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 18657, plotted from its record coordinates.

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

Scope ZIP code 18657. 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.