Henniker, New Hampshire Area Code

Henniker, NH Area Codes are

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

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

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

New Hampshire Area Code Map