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 17839 Lightstreet Columbia County 570
PA 17840 Locust Gap Northumberland County 272, 570
PA 17841 Mc Clure Mifflin County 223, 272, 570, 717
PA 17842 Middleburg Snyder County 223, 272, 570, 717
PA 17843 Beaver Springs Snyder County 570
PA 17844 Mifflinburg Union County 272, 570, 582, 814
PA 17845 Millmont Union County 223, 272, 570, 582, 717, 814
PA 17846 Millville Columbia County 272, 570
PA 17847 Milton Northumberland County 272, 570
PA 17850 Montandon Northumberland County 272, 570
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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.