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.

42,735 verified records
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Nassau County ZIP Codes

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

County State ZIP Code City Area Codes
Nassau County NY 11596 Williston Park 363, 516
Nassau County NY 11597 Westbury 516
Nassau County NY 11598 Woodmere 363, 516
Nassau County NY 11599 Garden City 516, 631, 718
Nassau County NY 11709 Bayville 363, 516
Nassau County NY 11710 Bellmore 363, 516
Nassau County NY 11714 Bethpage 363, 516
Nassau County NY 11732 East Norwich 363, 516
Nassau County NY 11735 Farmingdale 363, 516, 631, 934
Nassau County NY 11736 Farmingdale 516
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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.