Rhode Island is actually located on the US mainland, despite its name.

The statement is false. Rhode Island is not located on the US mainland. It is a state in the New England region of the United States, situated in the northeastern part of the country. However, despite its name, Rhode Island is not an island. It is mostly located on the mainland, specifically connected to the rest of the country by a land bridge called the Ashley Brook-Albee's Creek Barrier Beach system. Therefore, Rhode Island is geographically a part of the mainland United States, making the given statement false.