ZIP Code 17521

17521 is one of Pennsylvania's ZIP codes, delivering to addresses in Elm, Lancaster County.

City: Elm
County: Lancaster County
State: Pennsylvania
Prefix: 175xx

Where this code sits

17521 is part of the 175xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Elm.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 17521 delivers to without sharing its boundary.

ZIP codes nearest 17521

The ZIP codes whose reference points sit closest to 17521.
ZIP code	Distance	Delivers to
ZIP code 17543	2.7 mi	Lititz, PA
ZIP code 17545	4.4 mi	Manheim, PA
ZIP code 17533	5.0 mi	Hopeland, PA
ZIP code 17085	5.4 mi	Rexmont, PA
ZIP code 17016	5.8 mi	Cornwall, PA
ZIP code 17606	6.9 mi	Lancaster, PA
ZIP code 17088	7.0 mi	Schaefferstown, PA
ZIP code 17083	7.2 mi	Quentin, 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 17521, plotted from its record coordinates.

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

Scope ZIP code 17521. 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.