ZIP Code 18078

18078 is one of Pennsylvania's ZIP codes, delivering to addresses in Schnecksville, Lehigh County.

City: Schnecksville
County: Lehigh County
State: Pennsylvania
Prefix: 180xx

Where this code sits

18078 is part of the 180xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Schnecksville.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 18078 delivers to without sharing its boundary.

ZIP codes nearest 18078

The ZIP codes whose reference points sit closest to 18078.
ZIP code	Distance	Delivers to
ZIP code 18065	1.2 mi	Neffs, PA
ZIP code 18080	3.6 mi	Slatington, PA
ZIP code 18069	4.2 mi	Orefield, PA
ZIP code 18079	4.8 mi	Slatedale, PA
ZIP code 18053	5.2 mi	Germansville, PA
ZIP code 18059	5.3 mi	Laurys Station, PA
ZIP code 18086	5.6 mi	Treichlers, PA
ZIP code 18088	6.3 mi	Walnutport, 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 18078, plotted from its record coordinates.

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

Scope ZIP code 18078. 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.