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
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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 19435 Frederick Montgomery County 484, 610, 835
PA 19436 Gwynedd Montgomery County 215, 267, 445
PA 19437 Gwynedd Valley Montgomery County 215, 267, 445
PA 19438 Harleysville Montgomery County 215, 267, 445, 484, 610, 835
PA 19440 Hatfield Montgomery County 215, 267, 445
PA 19441 Harleysville Montgomery County 215
PA 19442 Kimberton Chester County 484, 610, 835
PA 19443 Kulpsville Montgomery County 215, 267, 445
PA 19444 Lafayette Hill Montgomery County 215, 267, 445, 484, 610, 835
PA 19446 Lansdale Montgomery County 215, 267, 445, 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.