<P> West Africa , also called Western Africa and the West of Africa , is the westernmost subregion of Africa . West Africa has been defined as including 18 countries : Benin , Burkina Faso , the island nation of Cape Verde , Gambia , Ghana , Guinea , Guinea - Bissau , Ivory Coast , Liberia , Mali , Mauritania , Niger , Nigeria , the island of Saint Helena , Senegal , Sierra Leone , São Tomé and Príncipe and Togo . The population of West Africa is estimated at about 362 million people as of 2016 ... </P>
<P> West Africa , also called Western Africa and the West of Africa , is the westernmost subregion of Africa . West Africa has been defined as including 18 countries : Benin , Burkina Faso , the island nation of Cape Verde , Gambia , Ghana , Guinea , Guinea - Bissau , Ivory Coast , Liberia , Mali , Mauritania , Niger , Nigeria , the island of Saint Helena , Senegal , Sierra Leone , São Tomé and Príncipe and Togo . The population of West Africa is estimated at about 362 million people as of 2016 ... </P>
how many countries are there in west africa
how many countries are there in west africa
18
18