ZIP Code 16003

16003 is one of Pennsylvania's ZIP codes, delivering to addresses in Butler, Butler County.

City: Butler
County: Butler County
State: Pennsylvania
Prefix: 160xx

Where this code sits

16003 is part of the 160xx range, the group of codes handled by one mail processing centre. Butler is served by 3 ZIP codes in total; the full list, with the county each falls in, is on the Butler page.

Butler Pennsylvania ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 16003 delivers to without sharing its boundary.

ZIP codes nearest 16003

The ZIP codes whose reference points sit closest to 16003.
ZIP code	Distance	Delivers to
ZIP code 16045	1.3 mi	Lyndora, PA
ZIP code 16002	2.4 mi	Butler, PA
ZIP code 16001	2.6 mi	Butler, PA
ZIP code 16029	2.8 mi	East Butler, PA
ZIP code 16017	4.5 mi	Boyers, PA
ZIP code 16018	4.5 mi	Boyers, PA
ZIP code 16039	4.9 mi	Herman, PA
ZIP code 16053	5.5 mi	Renfrew, 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 16003, plotted from its record coordinates.

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

Scope ZIP code 16003. 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.