ZIP Code 17726

17726 is one of Pennsylvania's ZIP codes, delivering to addresses in Castanea, Clinton County.

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

Where this code sits

17726 is part of the 177xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Castanea.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 17726 delivers to without sharing its boundary.

ZIP codes nearest 17726

The ZIP codes whose reference points sit closest to 17726.
ZIP code	Distance	Delivers to
ZIP code 17745	1.5 mi	Lock Haven, PA
ZIP code 17748	3.3 mi	Mc Elhattan, PA
ZIP code 17751	3.7 mi	Mill Hall, PA
ZIP code 17750	5.0 mi	Mackeyville, PA
ZIP code 17779	5.8 mi	Woolrich, PA
ZIP code 17721	7.4 mi	Avis, PA
ZIP code 16822	8.4 mi	Beech Creek, PA
ZIP code 17747	8.7 mi	Loganton, 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 17726, plotted from its record coordinates.

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

Scope ZIP code 17726. 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.