Merrimack, New Hampshire Area Code
Merrimack, NH Area Codes are
Merrimack, NH is officially utilizing one area code which is area code 603.
In addition to Merrimack, NH area code information read more about area code 603 details and New Hampshire area codes.
Merrimack, NH is located in Hillsborough County and observes the Eastern Time Zone. View our Times by Area Code tool.
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