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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Philadelphia County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Philadelphia County.

County State ZIP Code City Area Codes
Philadelphia County PA 19119 Philadelphia 215, 267, 445
Philadelphia County PA 19120 Philadelphia 215, 267, 445
Philadelphia County PA 19121 Philadelphia 215, 267, 445
Philadelphia County PA 19122 Philadelphia 215, 267, 445
Philadelphia County PA 19123 Philadelphia 215, 267, 445, 856
Philadelphia County PA 19124 Philadelphia 215, 267, 445
Philadelphia County PA 19125 Philadelphia 215, 267, 445
Philadelphia County PA 19126 Philadelphia 215, 267, 445
Philadelphia County PA 19127 Philadelphia 215, 267, 445, 484, 610, 835
Philadelphia County PA 19128 Philadelphia 215, 267, 445, 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.