Other nearby island countries and territories include Zanzibar to the west, Mauritius, Rodrigues, Agaléga and Réunion to the south, and Comoros and Mayotte to the southwest. Seychelles, with an estimated population of 86,525, has the smallest population of any African state.It has the highest Human Development Index in Africa and the highest income inequality in the world, as measured by the Gini index. Seychelles is a member of the African Union.