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 19316 Brandamore Chester County 484, 610, 835
PA 19317 Chadds Ford Delaware County 484, 610, 835
PA 19318 Chatham Chester County 484, 610, 835
PA 19319 Cheyney Delaware County 484, 610, 835
PA 19320 Coatesville Chester County 223, 484, 610, 717, 835
PA 19330 Cochranville Chester County 223, 484, 610, 717, 835
PA 19331 Concordville Delaware County 484
PA 19333 Devon Chester County 484, 610, 835
PA 19335 Downingtown Chester County 484, 610, 835
PA 19339 Concordville Delaware County 484
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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.