ZIP Code 17778

17778 is one of Pennsylvania's ZIP codes, delivering to addresses in Westport, Clinton County.

City: Westport
County: Clinton County
State: Pennsylvania
Prefix: 177xx

Where this code sits

17778 is part of the 177xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Westport.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 17778 delivers to without sharing its boundary.

ZIP codes nearest 17778

The ZIP codes whose reference points sit closest to 17778.
ZIP code	Distance	Delivers to
ZIP code 16871	8.1 mi	Pottersdale, PA
ZIP code 15861	9.9 mi	Sinnamahoning, PA
ZIP code 17764	11 mi	Renovo, PA
ZIP code 16845	14 mi	Karthaus, PA
ZIP code 15832	14 mi	Driftwood, PA
ZIP code 16829	15 mi	Clarence, PA
ZIP code 17729	15 mi	Cross Fork, PA
ZIP code 16874	16 mi	Snow Shoe, 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 17778, plotted from its record coordinates.

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

Scope ZIP code 17778. 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.