ZIP Code 15321

15321 is one of Pennsylvania's ZIP codes, delivering to addresses in Cecil, Washington County.

City: Cecil
County: Washington County
State: Pennsylvania
Prefix: 153xx

Where this code sits

15321 is part of the 153xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Cecil.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 15321 delivers to without sharing its boundary.

ZIP codes nearest 15321

The ZIP codes whose reference points sit closest to 15321.
ZIP code	Distance	Delivers to
ZIP code 15350	2.2 mi	Muse, PA
ZIP code 15339	2.3 mi	Hendersonville, PA
ZIP code 15031	2.4 mi	Cuddy, PA
ZIP code 15064	3.3 mi	Morgan, PA
ZIP code 15361	3.6 mi	Southview, PA
ZIP code 15055	3.7 mi	Lawrence, PA
ZIP code 15317	3.8 mi	Canonsburg, PA
ZIP code 15017	4.2 mi	Bridgeville, 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 15321, plotted from its record coordinates.

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

Scope ZIP code 15321. 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.