| Groupe d'âge | 2016 | 2021 | 2026 | 2031 | 2036 | 2041 |
| n | ||||||
| TOTAL | 243 354 | 251 370 | 257 037 | 261 148 | 263 981 | 266 100 |
| 0-4 | 13 053 | 12 201 | 12 069 | 11 842 | 11 873 | 12 256 |
| 5-9 | 13 543 | 13 543 | 12 685 | 12 579 | 12 346 | 12 369 |
| 10-14 | 12 262 | 13 898 | 13 905 | 13 082 | 12 984 | 12 748 |
| 15-19 | 12 900 | 12 503 | 14 074 | 14 106 | 13 334 | 13 251 |
| 20-24 | 13 183 | 12 656 | 12 275 | 13 796 | 13 878 | 13 209 |
| 25-29 | 13 094 | 13 515 | 12 629 | 12 242 | 13 771 | 13 916 |
| 30-34 | 14 420 | 14 107 | 14 192 | 13 154 | 12 794 | 14 370 |
| 35-39 | 16 421 | 15 142 | 14 727 | 14 841 | 13 729 | 13 383 |
| 40-44 | 14 177 | 16 788 | 15 489 | 15 129 | 15 274 | 14 126 |
| 45-49 | 14 337 | 14 530 | 16 938 | 15 714 | 15 405 | 15 585 |
| 50-54 | 18 301 | 14 596 | 14 719 | 17 095 | 15 950 | 15 693 |
| 55-59 | 19 737 | 18 547 | 14 870 | 14 962 | 17 338 | 16 263 |
| 60-64 | 18 715 | 19 998 | 18 823 | 15 170 | 15 252 | 17 646 |
| 65-69 | 16 533 | 18 565 | 19 937 | 18 852 | 15 286 | 15 383 |
| 70-74 | 12 651 | 15 645 | 17 690 | 19 131 | 18 184 | 14 839 |
| 75-79 | 8 121 | 11 316 | 14 103 | 16 081 | 17 535 | 16 777 |
| 80-84 | 5 791 | 6 749 | 9 518 | 11 997 | 13 841 | 15 263 |
| 85-89 | 3 769 | 4 172 | 4 978 | 7 159 | 9 179 | 10 776 |
| 90-94 | 1 824 | 2 127 | 2 398 | 2 988 | 4 426 | 5 817 |
| 94-99 | 480 | 676 | 846 | 996 | 1 312 | 2 025 |
| 100 et plus | 42 | 96 | 172 | 232 | 290 | 405 |
| Source : Institut de la statistique du Québec, Perspectives démographiques du Québec et des régions, 2016-2066. | ||||||
| .. | Data not available |
| ... | Not applicable |
| – | Void or zero |
| — | Negligible data |
| p | Preliminary data |
| r | Revised data |
| e | Estimated data |
| x | Confidential |
| F | Data unreliable |
| n.e.s. | Not elsewhere specified |
| p.-y. | Person-year |
| f.t.e | Full-time equivalent |
| ‰ | Per thousand |
| kg | Kilogramme |
| l | Liter |
| n | Number |
| t | Metric ton |
| $ | In dollars |
| k and '000 | In thousands |
| M and '000 000 | In millions |
| G | In billions |