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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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Blair County ZIP Codes

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

County State ZIP Code City Area Codes
Blair County PA 16601 Altoona 582, 814
Blair County PA 16602 Altoona 582, 814
Blair County PA 16603 Altoona 814
Blair County PA 16617 Bellwood 582, 814
Blair County PA 16625 Claysburg 582, 814
Blair County PA 16631 Curryville 582, 814
Blair County PA 16635 Duncansville 582, 814
Blair County PA 16637 East Freedom 582, 814
Blair County PA 16648 Hollidaysburg 582, 814
Blair County PA 16662 Martinsburg 582, 814
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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.