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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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St. Lawrence County ZIP Codes

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

County State ZIP Code City Area Codes
St. Lawrence County NY 13652 Hermon 315, 680
St. Lawrence County NY 13654 Heuvelton 315, 680
St. Lawrence County NY 13658 Lisbon 315, 343, 613, 680, 753
St. Lawrence County NY 13660 Madrid 315, 680
St. Lawrence County NY 13662 Massena 315, 343, 518, 613, 680, 753, 838
St. Lawrence County NY 13664 Morristown 315, 680
St. Lawrence County NY 13666 Newton Falls 315, 518, 680, 838
St. Lawrence County NY 13667 Norfolk 315, 680
St. Lawrence County NY 13668 Norwood 315, 680
St. Lawrence County NY 13669 Ogdensburg 315, 343, 613, 680, 753
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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.