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.

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Lancaster County ZIP Codes

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

County State ZIP Code City Area Codes
Lancaster County PA 17557 New Holland 223, 717
Lancaster County PA 17560 New Providence 223, 717
Lancaster County PA 17562 Paradise 223, 484, 610, 717, 835
Lancaster County PA 17563 Peach Bottom 223, 410, 443, 484, 610, 667, 717, 835
Lancaster County PA 17564 Penryn 717
Lancaster County PA 17565 Pequea 223, 717
Lancaster County PA 17566 Quarryville 223, 484, 610, 717, 835
Lancaster County PA 17567 Reamstown 717
Lancaster County PA 17568 Refton 223, 717
Lancaster County PA 17569 Reinholds 223, 484, 610, 717, 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.