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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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Westmoreland County ZIP Codes

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

County State ZIP Code City Area Codes
Westmoreland County PA 15479 Smithton 724, 878
Westmoreland County PA 15601 Greensburg 724, 878
Westmoreland County PA 15605 Greensburg 724
Westmoreland County PA 15606 Greensburg 724
Westmoreland County PA 15610 Acme 724, 878
Westmoreland County PA 15611 Adamsburg 724, 878
Westmoreland County PA 15612 Alverton 724, 878
Westmoreland County PA 15613 Apollo 724, 878
Westmoreland County PA 15615 Ardara 412, 724, 878
Westmoreland County PA 15616 Armbrust 724, 878
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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.