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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Delaware County ZIP Codes

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

County State ZIP Code City Area Codes
Delaware County PA 19023 Darby 215, 267, 445, 484, 610, 835
Delaware County PA 19026 Drexel Hill 484, 610, 835
Delaware County PA 19028 Edgemont 484
Delaware County PA 19029 Essington 215, 267, 445, 484, 610, 835, 856
Delaware County PA 19032 Folcroft 215, 267, 445, 484, 610, 835
Delaware County PA 19033 Folsom 484, 610, 835
Delaware County PA 19036 Glenolden 484, 610, 835
Delaware County PA 19037 Glen Riddle Lima 484
Delaware County PA 19039 Gradyville 484
Delaware County PA 19041 Haverford 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.