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U.S. ZIP Codes Database 2026

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Middlesex County ZIP Codes

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

County State ZIP Code City Area Codes
Middlesex County MA 01752 Marlborough 351, 508, 774, 978
Middlesex County MA 01754 Maynard 351, 978
Middlesex County MA 01760 Natick 508, 774
Middlesex County MA 01770 Sherborn 508, 774
Middlesex County MA 01773 Lincoln 339, 351, 508, 774, 781, 978
Middlesex County MA 01775 Stow 351, 978
Middlesex County MA 01776 Sudbury 339, 351, 508, 774, 781, 978
Middlesex County MA 01778 Wayland 339, 351, 508, 774, 781, 978
Middlesex County MA 01784 Woodville 508, 774
Middlesex County MA 01801 Woburn 339, 351, 781, 978
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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.