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 19450 Lederach Montgomery County 215, 267, 445
PA 19451 Mainland Montgomery County 215, 267, 445
PA 19453 Mont Clare Montgomery County 484, 610, 835
PA 19454 North Wales Montgomery County 215, 267, 445
PA 19455 North Wales Montgomery County 215
PA 19456 Oaks Montgomery County 484, 610, 835
PA 19457 Parker Ford Chester County 484, 610, 835
PA 19460 Phoenixville Chester County 484, 610, 835
PA 19462 Plymouth Meeting Montgomery County 215, 267, 445, 484, 610, 835
PA 19464 Pottstown Montgomery 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.