ZIP Code 18656

18656 is one of Pennsylvania's ZIP codes, delivering to addresses in Sweet Valley, Luzerne County.

City: Sweet Valley
County: Luzerne County
State: Pennsylvania
Prefix: 186xx

Where this code sits

18656 is part of the 186xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Sweet Valley.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 18656 delivers to without sharing its boundary.

ZIP codes nearest 18656

The ZIP codes whose reference points sit closest to 18656.
ZIP code	Distance	Delivers to
ZIP code 18621	4.8 mi	Hunlock Creek, PA
ZIP code 18618	5.9 mi	Harveys Lake, PA
ZIP code 18627	5.9 mi	Lehman, PA
ZIP code 18654	6.1 mi	Shawanese, PA
ZIP code 18612	8.3 mi	Dallas, PA
ZIP code 18708	8.5 mi	Shavertown, PA
ZIP code 18636	9.0 mi	Noxen, PA
ZIP code 18690	9.1 mi	Dallas, 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 18656, plotted from its record coordinates.

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

Scope ZIP code 18656. 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.