Carriacou's located in the Southeastern Caribbean Sea, Northeast of Grenada. Geography Carriacou's located in the Southeast Caribbean Sea, Northeast of Grenada. It's the largest in the Grenadines and in the Grenada Grenadines. It's the 3rd largest island in the Grenadine Islands (Vincentian and Grenadian Grenadines). It's located at latitude 12° 28' N, longitude 61° 27' W. Facts Carriacou's home to 8,000 people. The capital city's Hillsborough, the only town or city in Carriacou.… (More on Carriacou)