ZIP Code 17340

17340 is one of Pennsylvania's ZIP codes, delivering to addresses in Littlestown, Adams County.

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

Where this code sits

17340 is part of the 173xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Littlestown.

Littlestown Pennsylvania ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 17340 delivers to without sharing its boundary.

ZIP codes nearest 17340

The ZIP codes whose reference points sit closest to 17340.
ZIP code	Distance	Delivers to
ZIP code 17344	5.4 mi	Mc Sherrystown, PA
ZIP code 21787	6.8 mi	Taneytown, MD
ZIP code 17331	7.0 mi	Hanover, PA
ZIP code 17332	7.2 mi	Hanover, PA
ZIP code 17333	7.2 mi	Hanover, PA
ZIP code 17335	7.6 mi	Hanover, PA
ZIP code 17334	7.7 mi	Hanover, PA
ZIP code 17325	8.6 mi	Gettysburg, 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 17340, plotted from its record coordinates.

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

Scope ZIP code 17340. 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.