| Country | Year | |||||
|---|---|---|---|---|---|---|
| Benin | 2017 | 5,360,830 | 5,309,387 | 10,670,217 | ||
| Cabo Verde | 2017 | 266,664 | 283,296 | 549,960 | ||
| Gambia, The | 2017 | 984,737 | 1,009,769 | 1,994,506 | ||
| Ghana | 2017 | 13,152,262 | 13,539,982 | 26,692,244 | ||
| Guinea | 2017 | 6,002,318 | 5,994,743 | 11,997,061 | ||
| Cote d'Ivoire | 2017 | 11,900,564 | 11,642,239 | 23,542,803 | ||
| Liberia | 2017 | 2,124,465 | 2,141,317 | 4,265,782 | ||
| Mali | 2017 | 8,390,711 | 8,870,940 | 17,261,651 | ||
| Mauritania | 2017 | 1,754,555 | 1,894,505 | 3,649,060 | ||
| Niger | 2017 | 9,253,755 | 9,195,517 | 18,449,272 | ||
| Nigeria | 2017 | 93,789,251 | 90,209,192 | 183,998,443 | ||
| Guinea-Bissau | 2017 | 848,633 | 889,136 | 1,737,769 | ||
| Senegal | 2017 | 6,857,965 | 7,340,635 | 14,198,600 | ||
| Saint Helena | 2017 | 3,907 | 3,847 | 7,754 | ||
| Sierra Leone | 2017 | 2,888,903 | 3,063,325 | 5,952,228 | ||
| Togo | 2017 | 3,821,521 | 3,888,758 | 7,710,279 | ||
| Burkina Faso | 2017 | 9,617,728 | 9,710,927 | 19,328,655 |