U.S. postal lookup

U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

42,735 verified records
All states and U.S. territories
Maps and coordinates
State directory

Pennsylvania ZIP Codes

Complete postal directory, details, and geographic map for the State of Pennsylvania.

State ZIP Code City County Area Codes
PA 19539 Mertztown Berks County 484, 610, 835
PA 19540 Mohnton Berks County 223, 484, 610, 717, 835
PA 19541 Mohrsville Berks County 484, 610, 835
PA 19542 Monocacy Station Berks County 484
PA 19543 Morgantown Berks County 223, 484, 610, 717, 835
PA 19544 Mount Aetna Berks County 223, 484, 610, 717, 835
PA 19545 New Berlinville Berks County 484, 610, 835
PA 19547 Oley Berks County 484, 610, 835
PA 19548 Pine Forge Berks County 484
PA 19549 Port Clinton Schuylkill County 272, 484, 570, 610, 835
Page 219 of 222

Geographic Map of Pennsylvania

Postal context

About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.