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.
Select Any New Hampshire City or Town Alphabetically
Area Codes Look Up By State and City
Area Codes Look Up in Surrounding Places
