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 17270 Williamson Franklin County 717
PA 17271 Willow Hill Franklin County 223, 582, 717, 814
PA 17272 Zullinger Franklin County 717
PA 17301 Abbottstown Adams County 223, 717
PA 17302 Airville York County 223, 717
PA 17303 Arendtsville Adams County 223, 717
PA 17304 Aspers Adams County 223, 717
PA 17306 Bendersville Adams County 223, 717
PA 17307 Biglerville Adams County 223, 717
PA 17309 Brogue York County 223, 717
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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.