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 18911 Blooming Glen Bucks County 215
PA 18912 Buckingham Bucks County 215, 267, 445
PA 18913 Carversville Bucks County 215, 267, 445
PA 18914 Chalfont Bucks County 215, 267, 445
PA 18915 Colmar Montgomery County 215, 267, 445
PA 18916 Danboro Bucks County 215, 267, 445
PA 18917 Dublin Bucks County 215, 267, 445
PA 18918 Earlington Montgomery County 215, 267, 445
PA 18920 Erwinna Bucks County 215, 267, 445, 484, 610, 835
PA 18921 Ferndale Bucks 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.