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U.S. ZIP Codes Database 2026

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Lycoming County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Lycoming County.

County State ZIP Code City Area Codes
Lycoming County PA 17701 Williamsport 272, 570
Lycoming County PA 17702 Williamsport 272, 570
Lycoming County PA 17703 Williamsport 570
Lycoming County PA 17705 Williamsport 570
Lycoming County PA 17720 Antes Fort 272, 570
Lycoming County PA 17723 Cammal 272, 570
Lycoming County PA 17727 Cedar Run 272, 570, 582, 814
Lycoming County PA 17728 Cogan Station 272, 570
Lycoming County PA 17737 Hughesville 272, 570
Lycoming County PA 17739 Jersey Mills 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.