| Country | Year | |||||
|---|---|---|---|---|---|---|
| Benin | 2018 | 5,512,502 | 5,454,374 | 10,966,876 | ||
| Cabo Verde | 2018 | 270,366 | 287,034 | 557,400 | ||
| Gambia, The | 2018 | 1,005,122 | 1,031,007 | 2,036,129 | ||
| Ghana | 2018 | 13,441,587 | 13,842,925 | 27,284,512 | ||
| Guinea | 2018 | 6,162,943 | 6,154,146 | 12,317,089 | ||
| Cote d'Ivoire | 2018 | 12,119,738 | 11,864,873 | 23,984,611 | ||
| Liberia | 2018 | 2,176,482 | 2,194,424 | 4,370,906 | ||
| Mali | 2018 | 8,642,599 | 9,140,941 | 17,783,540 | ||
| Mauritania | 2018 | 1,793,602 | 1,936,533 | 3,730,135 | ||
| Niger | 2018 | 9,556,863 | 9,497,606 | 19,054,469 | ||
| Nigeria | 2018 | 96,105,014 | 92,458,280 | 188,563,294 | ||
| Guinea-Bissau | 2018 | 865,237 | 905,562 | 1,770,799 | ||
| Senegal | 2018 | 7,027,098 | 7,519,880 | 14,546,978 | ||
| Saint Helena | 2018 | 3,911 | 3,857 | 7,768 | ||
| Sierra Leone | 2018 | 2,960,755 | 3,137,111 | 6,097,866 | ||
| Togo | 2018 | 3,924,549 | 3,993,477 | 7,918,026 | ||
| Burkina Faso | 2018 | 9,914,141 | 10,007,556 | 19,921,697 |