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 19365 Parkesburg Chester County 223, 484, 610, 717, 835
PA 19366 Pocopson Chester County 484, 610, 835
PA 19367 Pomeroy Chester County 484, 610, 835
PA 19369 Sadsburyville Chester County 484, 610, 835
PA 19371 Suplee Chester County 484, 610, 835
PA 19372 Thorndale Chester County 484, 610, 835
PA 19373 Thornton Delaware County 484, 610, 835
PA 19374 Toughkenamon Chester County 484, 610, 835
PA 19375 Unionville Chester County 484, 610, 835
PA 19376 Wagontown Chester County 484
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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.