Williamstown, New Jersey Area Code

Williamstown, NJ Area Codes are

Williamstown, NJ is officially utilizing one area code which is area code 856.

In addition to Williamstown, NJ area code information read more about area code 856 details and New Jersey area codes.

Williamstown, NJ is located in Gloucester County and observes the Eastern Time Zone. View our Times by Area Code tool.

New Jersey Area Code Map