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 19340 Concordville Delaware County 484
PA 19341 Exton Chester County 484, 610, 835
PA 19342 Glen Mills Delaware County 484, 610, 835
PA 19343 Glenmoore Chester County 484, 610, 835
PA 19344 Honey Brook Chester County 223, 484, 610, 717, 835
PA 19345 Immaculata Chester County 484, 610, 835
PA 19346 Kelton Chester County 484, 610, 835
PA 19347 Kemblesville Chester County 484, 610, 835
PA 19348 Kennett Square Chester County 484, 610, 835
PA 19350 Landenberg Chester County 302, 410, 443, 484, 610, 667, 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.