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 16927 Harrison Valley Potter County 582, 607, 814
PA 16928 Knoxville Tioga County 582, 607, 814
PA 16929 Lawrenceville Tioga County 272, 570, 582, 607, 814
PA 16930 Liberty Tioga County 272, 570
PA 16932 Mainesburg Tioga County 272, 570
PA 16933 Mansfield Tioga County 272, 570
PA 16935 Middlebury Center Tioga County 272, 570, 582, 814
PA 16936 Millerton Tioga County 272, 570, 607
PA 16937 Mills Potter County 582, 814
PA 16938 Morris Tioga County 272, 570, 582, 814
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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.