ZIP Code 16921

16921 is one of Pennsylvania's ZIP codes, delivering to addresses in Gaines, Tioga County.

City: Gaines
County: Tioga County
State: Pennsylvania
Prefix: 169xx

Where this code sits

16921 is part of the 169xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Gaines.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 16921 delivers to without sharing its boundary.

ZIP codes nearest 16921

The ZIP codes whose reference points sit closest to 16921.
ZIP code	Distance	Delivers to
ZIP code 16922	4.8 mi	Galeton, PA
ZIP code 16943	6.9 mi	Sabinsville, PA
ZIP code 16948	10 mi	Ulysses, PA
ZIP code 16950	12 mi	Westfield, PA
ZIP code 16901	13 mi	Wellsboro, PA
ZIP code 16927	15 mi	Harrison Valley, PA
ZIP code 16935	16 mi	Middlebury Center, PA
ZIP code 17727	16 mi	Cedar Run, 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 16921, plotted from its record coordinates.

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

Scope ZIP code 16921. 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.