ZIP Code 17320

17320 is one of Pennsylvania's ZIP codes, delivering to addresses in Fairfield, Adams County.

City: Fairfield
County: Adams County
State: Pennsylvania
Prefix: 173xx

Where this code sits

17320 is part of the 173xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Fairfield.

Fairfield Pennsylvania ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 17320 delivers to without sharing its boundary.

ZIP codes nearest 17320

The ZIP codes whose reference points sit closest to 17320.
ZIP code	Distance	Delivers to
ZIP code 21727	6.2 mi	Emmitsburg, MD
ZIP code 17343	6.3 mi	Mc Knightstown, PA
ZIP code 17214	6.4 mi	Blue Ridge Summit, PA
ZIP code 17353	7.0 mi	Orrtanna, PA
ZIP code 17310	7.6 mi	Cashtown, PA
ZIP code 17261	8.1 mi	South Mountain, PA
ZIP code 17325	8.2 mi	Gettysburg, PA
ZIP code 21780	8.9 mi	Sabillasville, MD

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 17320, plotted from its record coordinates.

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

Scope ZIP code 17320. 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.