East Dennis, Massachusetts Area Code
East Dennis, MA is officially utilizing an area code overlay in which area codes 508 and 774 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary.
In addition to East Dennis, MA area code information read more about area codes 508 and 774 details and Massachusetts area codes.
East Dennis, MA is located in Barnstable County and observes the Eastern Time Zone. View our Times by Area Code tool.