ZIP Code 19539

19539 is one of Pennsylvania's ZIP codes, delivering to addresses in Mertztown, Berks County.

City: Mertztown
County: Berks County
State: Pennsylvania
Prefix: 195xx

Where this code sits

19539 is part of the 195xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Mertztown.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 19539 delivers to without sharing its boundary.

ZIP codes nearest 19539

The ZIP codes whose reference points sit closest to 19539.
ZIP code	Distance	Delivers to
ZIP code 19562	0.8 mi	Topton, PA
ZIP code 19538	3.0 mi	Maxatawny, PA
ZIP code 19511	3.2 mi	Bowers, PA
ZIP code 19536	3.3 mi	Lyon Station, PA
ZIP code 18031	4.1 mi	Breinigsville, PA
ZIP code 18011	4.6 mi	Alburtis, PA
ZIP code 19530	5.0 mi	Kutztown, PA
ZIP code 18087	5.9 mi	Trexlertown, 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 19539, plotted from its record coordinates.

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

Scope ZIP code 19539. 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.