ZIP Code 18037

18037 is one of Pennsylvania's ZIP codes, delivering to addresses in Coplay, Lehigh County.

City: Coplay
County: Lehigh County
State: Pennsylvania
Prefix: 180xx

Where this code sits

18037 is part of the 180xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Coplay.

Coplay Pennsylvania ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 18037 delivers to without sharing its boundary.

ZIP codes nearest 18037

The ZIP codes whose reference points sit closest to 18037.
ZIP code	Distance	Delivers to
ZIP code 18052	1.0 mi	Whitehall, PA
ZIP code 18032	1.7 mi	Catasauqua, PA
ZIP code 18001	2.1 mi	Lehigh Valley, PA
ZIP code 18003	2.1 mi	Lehigh Valley, PA
ZIP code 18016	2.1 mi	Bethlehem, PA
ZIP code 18067	2.1 mi	Northampton, PA
ZIP code 18002	3.6 mi	Lehigh Valley, PA
ZIP code 18109	3.7 mi	Allentown, 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 18037, plotted from its record coordinates.

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

Scope ZIP code 18037. 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.