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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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Westchester County ZIP Codes

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

County State ZIP Code City Area Codes
Westchester County NY 10501 Amawalk 914
Westchester County NY 10502 Ardsley 914
Westchester County NY 10503 Ardsley On Hudson 914
Westchester County NY 10504 Armonk 203, 475, 914
Westchester County NY 10505 Baldwin Place 845, 914
Westchester County NY 10506 Bedford 203, 475, 914
Westchester County NY 10507 Bedford Hills 914
Westchester County NY 10510 Briarcliff Manor 914
Westchester County NY 10511 Buchanan 914
Westchester County NY 10514 Chappaqua 914
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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.