Capital Puerto Rico is the capital and most populous city of the U.S. Commonwealth of Puerto Rico. It is located on the northeastern coast of the island, on the Atlantic Ocean. The four crossword solutions for this term are Juan (4 letters), Islas (5 letters), PONCE (5 letters), ISLE (4 letters), and Isla (4 letters). Juan is the Spanish form of John, and is a common name in Puerto Rico. Islas is the Spanish word for islands, and is used to refer to the archipelago of Puerto Rico. PONCE is a municipality located on the southern coast of Puerto Rico, and is the second largest city on the island. ISLE is an English word meaning island, and Isla is the Spanish word for island.