| Country | Year | |||||
|---|---|---|---|---|---|---|
| Benin | 2015 | 5,064,336 | 5,026,280 | 10,090,616 | ||
| Cabo Verde | 2015 | 259,273 | 275,841 | 535,114 | ||
| Gambia, The | 2015 | 943,595 | 966,922 | 1,910,517 | ||
| Ghana | 2015 | 12,589,912 | 12,950,673 | 25,540,585 | ||
| Guinea | 2015 | 5,692,069 | 5,686,904 | 11,378,973 | ||
| Cote d'Ivoire | 2015 | 11,460,802 | 11,195,283 | 22,656,085 | ||
| Liberia | 2015 | 2,021,979 | 2,036,657 | 4,058,636 | ||
| Mali | 2015 | 7,903,843 | 8,348,354 | 16,252,197 | ||
| Mauritania | 2015 | 1,677,472 | 1,811,492 | 3,488,964 | ||
| Niger | 2015 | 8,667,626 | 8,612,247 | 17,279,873 | ||
| Nigeria | 2015 | 89,287,280 | 85,839,942 | 175,127,222 | ||
| Guinea-Bissau | 2015 | 815,744 | 856,559 | 1,672,303 | ||
| Senegal | 2015 | 6,526,341 | 6,988,220 | 13,514,561 | ||
| Saint Helena | 2015 | 3,896 | 3,823 | 7,719 | ||
| Sierra Leone | 2015 | 2,752,009 | 2,922,390 | 5,674,399 | ||
| Togo | 2015 | 3,620,716 | 3,684,653 | 7,305,369 | ||
| Burkina Faso | 2015 | 9,046,056 | 9,139,045 | 18,185,101 |