Hollis, New Hampshire Area Code

Hollis, NH Area Codes are

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

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

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

New Hampshire Area Code Map