Three of the seven groups, namely the IS-West Africa, IS-Philippines and IS-Bangladesh, were also designated as Foreign Terrorist Organizations (FTOs), Xinhua reported.
US persons are generally prohibited from engaging in transactions with them, and their property and interests in property subject to country's jurisdiction are blocked.
In addition, it is a crime to knowingly provide, or attempt or conspire to provide, material support or resources to these organisations.
The other four groups designated as SDGTs were IS-Somalia, Jund al-Khilafah-Tunisia, IS-Egypt and the Maute Group, and the individuals are Mahad Moalim and Abu Musab al-Barnawi.
Among other consequences, all property and interests in property of the SDGT designees are blocked, and US persons are generally prohibited from engaging in any transactions with them.
The State Department also said that the latest designations aim to notify the US public and the international community that these groups and individuals have committed or pose a significant risk of committing acts of terrorism.
"Terrorist designations expose and isolate entities and individuals and deny them access to the US financial system. Moreover, designations can assist the law enforcement activities of US agencies and other governments," it added.
(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)
Get the latest election news, live updates and election schedule for Lok Sabha Elections 2019 on ndtv.com/elections. Like us on Facebook or follow us on Twitter and Instagram for updates from each of the 543 parliamentary seats for the 2019 Indian general elections.