ZIP Code 17584

17584 is one of Pennsylvania's ZIP codes, delivering to addresses in Willow Street, Lancaster County.

City: Willow Street
County: Lancaster County
State: Pennsylvania
Prefix: 175xx

Where this code sits

17584 is part of the 175xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Willow Street.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 17584 delivers to without sharing its boundary.

ZIP codes nearest 17584

The ZIP codes whose reference points sit closest to 17584.
ZIP code	Distance	Delivers to
ZIP code 17583	0.7 mi	West Willow, PA
ZIP code 17537	2.4 mi	Lampeter, PA
ZIP code 17568	2.7 mi	Refton, PA
ZIP code 17503	3.8 mi	Bart, PA
ZIP code 17564	3.8 mi	Penryn, PA
ZIP code 17605	3.8 mi	Lancaster, PA
ZIP code 17607	3.8 mi	Lancaster, PA
ZIP code 17608	3.8 mi	Lancaster, 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 17584, plotted from its record coordinates.

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

Scope ZIP code 17584. 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.