The Riviera Maya is in Quintana Roo in the Yucatan Peninsula
In the map on the right, the Riviera Maya is the northern part of the Mexican state of Quintana Roo. The Riviera Maya extends along the extreme eastern coast of Quintana Roo along the Caribbean Sea (also on the right).
The popular Mayan ruins of Coba and Tulum are in Quintana Roo as well as the modern tourist towns of Playa del Carmen and Cancun.
Carol Chapman, author of the End of the World 2012 EBook.