ZIP Code 17771

17771 is one of Pennsylvania's ZIP codes, delivering to addresses in Trout Run, Lycoming County.

City: Trout Run
County: Lycoming County
State: Pennsylvania
Prefix: 177xx

Where this code sits

17771 is part of the 177xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Trout Run.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 17771 delivers to without sharing its boundary.

ZIP codes nearest 17771

The ZIP codes whose reference points sit closest to 17771.
ZIP code	Distance	Delivers to
ZIP code 17705	5.6 mi	Williamsport, PA
ZIP code 17763	6.8 mi	Ralston, PA
ZIP code 17728	7.4 mi	Cogan Station, PA
ZIP code 17765	11 mi	Roaring Branch, PA
ZIP code 17754	12 mi	Montoursville, PA
ZIP code 17701	12 mi	Williamsport, PA
ZIP code 17703	12 mi	Williamsport, PA
ZIP code 16930	12 mi	Liberty, 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 17771, plotted from its record coordinates.

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

Scope ZIP code 17771. 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.