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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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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 11096 Inwood 347, 363, 516, 718, 917, 929
Nassau County NY 11099 New Hyde Park 516
Nassau County NY 11501 Mineola 363, 516
Nassau County NY 11507 Albertson 363, 516
Nassau County NY 11509 Atlantic Beach 347, 363, 516, 718, 917, 929
Nassau County NY 11510 Baldwin 363, 516
Nassau County NY 11514 Carle Place 363, 516
Nassau County NY 11516 Cedarhurst 363, 516
Nassau County NY 11518 East Rockaway 363, 516
Nassau County NY 11520 Freeport 363, 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.