- % of World Pop5.22%
Western Africa includes the following countries:
| Year | Population | Density (km²) | Growth Rate |
| 2019 | 391,440,157 | 64.55 | 2.69% |
| 2015 | 351,717,633 | 58.00 | 2.74% |
| 2010 | 307,040,440 | 50.63 | 2.77% |
| 2005 | 267,894,648 | 44.18 | 2.71% |
| 2000 | 234,748,622 | 38.71 | 2.67% |
| 1995 | 205,691,819 | 33.92 | 2.65% |
| 1990 | 180,535,011 | 29.77 | 2.68% |
| 1985 | 157,891,451 | 26.04 | 2.75% |
| 1980 | 137,799,464 | 22.72 | 2.79% |
| 1975 | 120,241,770 | 19.83 | 2.65% |
| 1970 | 106,080,033 | 17.49 | 2.40% |
| 1965 | 94,607,302 | 15.60 | 2.23% |
| 1960 | 84,947,061 | 14.01 | 2.05% |
| 1955 | 77,108,323 | 12.72 | 1.82% |
| 1950 | 70,875,188 | 11.69 | 0.00% |
| Year | Population | Density (km²) | Growth Rate |
| 2020 | 401,861,254 | 66.27 | 2.66% |
| 2025 | 456,742,208 | 75.32 | 2.55% |
| 2030 | 516,632,942 | 85.20 | 2.45% |
| 2035 | 581,280,434 | 95.86 | 2.34% |
| 2040 | 650,103,365 | 107.21 | 2.21% |
| 2045 | 722,177,162 | 119.09 | 2.07% |
| 2050 | 796,494,190 | 131.35 | 1.92% |
| 2055 | 872,395,259 | 143.86 | 1.78% |
| 2060 | 948,926,407 | 156.48 | 1.64% |
| 2065 | 1,025,445,013 | 169.10 | 1.51% |
| 2070 | 1,101,031,560 | 181.57 | 1.38% |
| 2075 | 1,174,746,700 | 193.72 | 1.25% |
| 2080 | 1,245,569,171 | 205.40 | 1.13% |
| 2085 | 1,312,440,928 | 216.43 | 1.00% |
| 2090 | 1,374,697,257 | 226.70 | 0.89% |
| 2095 | 1,431,918,867 | 236.13 | 0.78% |