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.

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Pennsylvania ZIP Codes

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

State ZIP Code City County Area Codes
PA 19601 Reading Berks County 484, 610, 835
PA 19602 Reading Berks County 484, 610, 835
PA 19603 Reading Berks County 484
PA 19604 Reading Berks County 484, 610, 835
PA 19605 Reading Berks County 484, 610, 835
PA 19606 Reading Berks County 484, 610, 835
PA 19607 Reading Berks County 484, 610, 835
PA 19608 Reading Berks County 223, 484, 610, 717, 835
PA 19609 Reading Berks County 484, 610, 835
PA 19610 Reading Berks County 484, 610, 835
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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.