ZIP Code 17721

17721 is one of Pennsylvania's ZIP codes, delivering to addresses in Avis, Clinton County.

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

Where this code sits

17721 is part of the 177xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Avis.

Avis Pennsylvania ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 17721 delivers to without sharing its boundary.

ZIP codes nearest 17721

The ZIP codes whose reference points sit closest to 17721.
ZIP code	Distance	Delivers to
ZIP code 17779	3.2 mi	Woolrich, PA
ZIP code 17748	4.5 mi	Mc Elhattan, PA
ZIP code 17740	4.8 mi	Jersey Shore, PA
ZIP code 17720	5.1 mi	Antes Fort, PA
ZIP code 17745	7.3 mi	Lock Haven, PA
ZIP code 17726	7.4 mi	Castanea, PA
ZIP code 17776	9.0 mi	Waterville, PA
ZIP code 17744	9.5 mi	Linden, 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 17721, plotted from its record coordinates.

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

Scope ZIP code 17721. 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.