San_Marcos,_Baja_California_Sur
San Marcos, Baja California Sur
Island in Baja California Sur, Mexico
San Marcos is an island located in the northern portion of Baja California Sur, México. It faces the town of Santa Rosalía on the Gulf of California near Isla Tortuga. The only town on the island is also named San Marcos. The island has a land area of 28.748 km2 (11.100 sq mi), the 18th-largest island in Mexico.[1] Its population as of the 2005 census was 425 inhabitants. It is part of the Mulegé Municipality.