ZIP Code 18503

18503 is one of Pennsylvania's ZIP codes, delivering to addresses in Scranton, Lackawanna County.

City: Scranton
County: Lackawanna County
State: Pennsylvania
Prefix: 185xx

Where this code sits

18503 is part of the 185xx range, the group of codes handled by one mail processing centre. Scranton is served by 13 ZIP codes in total; the full list, with the county each falls in, is on the Scranton page.

Scranton Pennsylvania ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 18503 delivers to without sharing its boundary.

ZIP codes nearest 18503

The ZIP codes whose reference points sit closest to 18503.
ZIP code	Distance	Delivers to
ZIP code 18502	0.0 mi	Scranton, PA
ZIP code 18519	0.0 mi	Scranton, PA
ZIP code 18510	0.8 mi	Scranton, PA
ZIP code 18504	1.2 mi	Scranton, PA
ZIP code 18505	1.3 mi	Scranton, PA
ZIP code 18501	1.5 mi	Scranton, PA
ZIP code 18540	1.5 mi	Scranton, PA
ZIP code 18577	1.5 mi	Scranton, 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 18503, plotted from its record coordinates.

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

Scope ZIP code 18503. 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.