Mauritius, officially the Republic of Mauritius, is an island nation in the Indian Ocean about 2,000 kilometers (1,200 mi) off the southeast coast of the African continent, east of Madagascar. It includes the main island (also called Mauritius), as well as Rodrigues, Agaléga and St. Brandon. The islands of Mauritius and Rodrigues, along with nearby Réunion (a French overseas department), are part of the Mascarene Islands. The capital and largest city, Port Louis, is located in Mauritius, where most of the population is concentrated. The country spans 2,040 square kilometers (790 sq. mi) and has an exclusive economic zone covering 2.3 million square kilometers.