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 19015 Brookhaven Delaware County 484, 610, 835
PA 19016 Chester Delaware County 484
PA 19017 Chester Heights Delaware County 484, 610, 835
PA 19018 Clifton Heights Delaware County 484, 610, 835
PA 19019 Philadelphia Philadelphia County 215
PA 19020 Bensalem Bucks County 215, 267, 445, 856
PA 19021 Croydon Bucks County 215, 267, 445
PA 19022 Crum Lynne Delaware County 484, 610, 835, 856
PA 19023 Darby Delaware County 215, 267, 445, 484, 610, 835
PA 19025 Dresher Montgomery County 215, 267, 445
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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.