Hillsborough, New Hampshire Area Code

Hillsborough, NH Area Codes are

Hillsborough, NH is officially utilizing one area code which is area code 603.

In addition to Hillsborough, NH area code information read more about area code 603 details and New Hampshire area codes.

Hillsborough, NH is located in Hillsborough County and observes the Eastern Time Zone. View our Times by Area Code tool.

New Hampshire Area Code Map