| Year | Total (Ghana) | Ashanti | ||
| Size | % | Size | % | |
| 1960 | 6,726,815 | 100.00 | 1,109,133 | 16.3 |
| 1970 | 8,559,313 | 100.00 | 1,481,698 | 17.3 |
| 1984 | 12,296,081 | 100.00 | 2,090,100 | 17.0 |
| 2000 | 18,912,079 | 100.00 | 3,612,950 | 19.1 |
| 2010 | 24,658,823 | 100.00 | 4,780,380 | 19.4 |
| 2021 | 30,832,019 | 100.00 | 5,440,463 | 17.6 |