ZIP Code 15856

15856 is one of Pennsylvania's ZIP codes, delivering to addresses in Rockton, Clearfield County.

City: Rockton
County: Clearfield County
State: Pennsylvania
Prefix: 158xx

Where this code sits

15856 is part of the 158xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Rockton.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 15856 delivers to without sharing its boundary.

ZIP codes nearest 15856

The ZIP codes whose reference points sit closest to 15856.
ZIP code	Distance	Delivers to
ZIP code 15848	4.8 mi	Luthersburg, PA
ZIP code 15801	5.9 mi	Du Bois, PA
ZIP code 16838	7.6 mi	Grampian, PA
ZIP code 15866	7.7 mi	Troutville, PA
ZIP code 15865	8.7 mi	Sykesville, PA
ZIP code 15840	9.2 mi	Falls Creek, PA
ZIP code 15849	9.7 mi	Penfield, PA
ZIP code 16833	10 mi	Curwensville, 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 15856, plotted from its record coordinates.

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

Scope ZIP code 15856. 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.