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
All states and U.S. territories
Maps and coordinates
County directory

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 19074 Norwood 484, 610, 835
Delaware County PA 19076 Prospect Park 484, 610, 835
Delaware County PA 19078 Ridley Park 484, 610, 835, 856
Delaware County PA 19079 Sharon Hill 215, 267, 445, 484, 610, 835
Delaware County PA 19080 Wayne 484
Delaware County PA 19081 Swarthmore 484, 610, 835
Delaware County PA 19082 Upper Darby 215, 267, 445, 484, 610, 835
Delaware County PA 19083 Havertown 484, 610, 835
Delaware County PA 19085 Villanova 484, 610, 835
Delaware County PA 19086 Wallingford 484, 610, 835
Page 12 of 14

Geographic Map of Delaware County

Postal context

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.