Population density is midyear population divided by land area in square kilometers.
| 1970 | 1990 | 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Benin | 27.2 | 46.8 | 64.0 | 74.7 | 86.9 | 89.5 | 92.2 | 95.0 | 97.8 | 100.8 | 103.7 | 106.8 | 109.8 | 112.9 | 115.9 | 119.0 | 122.0 |
| Burkina Faso | 20.5 | 33.5 | 43.6 | 50.9 | 59.1 | 60.9 | 62.8 | 64.7 | 66.6 | 68.6 | 70.7 | 72.7 | 74.7 | 76.6 | 78.5 | 80.4 | 82.3 |
| केप वर्दे | 71.4 | 93.2 | 112.5 | 120.4 | 126.5 | 126.9 | 127.0 | 127.1 | 127.1 | 127.1 | 127.2 | 127.3 | 127.4 | 127.6 | 127.7 | 128.2 | 129.0 |
| Côte d'Ivoire | 17.0 | 38.3 | 55.7 | 63.1 | 70.7 | 72.3 | 73.8 | 75.3 | 77.1 | 79.4 | 81.7 | 84.1 | 86.4 | 88.7 | 90.9 | 93.2 | 95.6 |
| Ghana | 39.2 | 67.7 | 86.3 | 98.7 | 112.0 | 114.7 | 117.5 | 120.4 | 123.2 | 126.1 | 129.0 | 131.9 | 134.6 | 137.4 | 140.1 | 142.9 | 145.7 |
| Guinea Bissau | 20.8 | 34.6 | 43.9 | 49.1 | 55.7 | 57.2 | 58.7 | 60.3 | 61.9 | 63.5 | 65.1 | 66.8 | 68.4 | 70.0 | 71.6 | 73.2 | 74.9 |
| Liberia | 15.2 | 23.1 | 30.4 | 34.3 | 42.1 | 43.8 | 45.4 | 46.4 | 47.4 | 48.4 | 49.4 | 50.3 | 51.3 | 52.4 | 53.5 | 54.6 | 55.8 |
| Mali | 5.1 | 7.5 | 9.5 | 11.1 | 13.1 | 13.5 | 13.9 | 14.3 | 14.8 | 15.2 | 15.7 | 16.2 | 16.8 | 17.3 | 17.8 | 18.3 | 18.9 |
| Niger | 3.7 | 6.5 | 9.1 | 10.9 | 13.1 | 13.6 | 14.1 | 14.6 | 15.2 | 15.7 | 16.3 | 16.9 | 17.5 | 18.1 | 18.7 | 19.3 | 20.0 |
| Nigeria | 61.4 | 106.6 | 138.8 | 159.2 | 183.0 | 188.2 | 193.5 | 198.8 | 204.1 | 209.4 | 214.6 | 219.9 | 225.0 | 230.0 | 235.0 | 239.9 | 245.0 |
| Senegal | 23.2 | 40.1 | 51.8 | 58.4 | 65.6 | 67.3 | 69.1 | 71.2 | 73.5 | 75.8 | 78.1 | 80.4 | 82.7 | 84.9 | 87.2 | 89.4 | 91.7 |
| Sierra Leone | 37.6 | 58.1 | 61.3 | 76.2 | 86.2 | 88.5 | 90.8 | 93.0 | 95.3 | 97.5 | 99.8 | 102.2 | 104.7 | 107.1 | 109.6 | 112.1 | 114.7 |
| Gambia | 51.8 | 104.2 | 143.8 | 164.7 | 190.4 | 196.0 | 201.9 | 207.9 | 213.9 | 219.8 | 225.7 | 231.4 | 237.1 | 242.8 | 248.6 | 254.5 | 260.5 |
| Togo | 41.3 | 73.5 | 94.5 | 107.5 | 123.8 | 127.2 | 130.6 | 133.9 | 137.4 | 140.9 | 144.5 | 148.1 | 151.8 | 155.6 | 159.4 | 163.2 | 167.1 |