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 18103 Allentown Lehigh County 484, 610, 835
PA 18104 Allentown Lehigh County 484, 610, 835
PA 18105 Allentown Lehigh County 484
PA 18106 Allentown Lehigh County 484, 610, 835
PA 18109 Allentown Lehigh County 484, 610, 835
PA 18175 Allentown Lehigh County 484
PA 18195 Allentown Lehigh County 484, 610, 835
PA 18201 Hazleton Luzerne County 272, 570
PA 18202 Hazleton Luzerne County 272, 570
PA 18210 Albrightsville Carbon County 272, 484, 570, 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.