Mauritius, officially the Republic of Mauritius, is an island country in the Indian Ocean, about 2,000 kilometres off the southeastern coast of East Africa, east of Madagascar. It includes the main island, as well as Rodrigues, Agaléga, and St. Brandon. The islands of Mauritius and Rodrigues, along with nearby Réunion, are part of the Mascarene Islands. The main island of Mauritius, where the population is concentrated, hosts the capital and largest city, Port Louis.