The Economic Community of West African States, also known as ECOWAS, is a regional economic union of fifteen countries located in West Africa. Collectively, these countries comprise an area of 5,114,162 km2 (1,974,589 sq mi), and in 2015 had an estimated population of over 349 million. As of February 2017, ECOWAS has 15 member states; eight of these are French-speaking, five are English-speaking, and two Portuguese-speaking.