| Groupe d'âge | 2016 | 2021 | 2026 | 2031 | 2036 | 2041 |
| n | ||||||
| TOTAL | 267 020 | 271 353 | 274 012 | 275 336 | 275 395 | 274 671 |
| 0-4 | 12 121 | 11 600 | 11 272 | 10 797 | 10 581 | 10 852 |
| 5-9 | 12 252 | 12 617 | 12 034 | 11 755 | 11 305 | 11 110 |
| 10-14 | 11 190 | 12 665 | 12 980 | 12 402 | 12 152 | 11 716 |
| 15-19 | 12 482 | 11 762 | 13 378 | 13 701 | 13 112 | 12 895 |
| 20-24 | 15 367 | 13 762 | 13 205 | 14 807 | 15 117 | 14 538 |
| 25-29 | 14 300 | 14 816 | 13 155 | 12 572 | 14 142 | 14 437 |
| 30-34 | 14 855 | 14 467 | 14 655 | 13 007 | 12 491 | 14 069 |
| 35-39 | 15 697 | 15 346 | 14 863 | 15 049 | 13 434 | 12 961 |
| 40-44 | 13 641 | 16 095 | 15 614 | 15 185 | 15 396 | 13 809 |
| 45-49 | 14 962 | 13 951 | 16 332 | 15 850 | 15 471 | 15 706 |
| 50-54 | 20 929 | 15 223 | 14 277 | 16 656 | 16 183 | 15 850 |
| 55-59 | 24 399 | 21 274 | 15 664 | 14 782 | 17 195 | 16 733 |
| 60-64 | 22 784 | 24 646 | 21 628 | 16 157 | 15 351 | 17 816 |
| 65-69 | 19 604 | 22 401 | 24 340 | 21 583 | 16 332 | 15 627 |
| 70-74 | 15 489 | 18 578 | 21 293 | 23 290 | 20 848 | 15 953 |
| 75-79 | 10 524 | 13 894 | 16 802 | 19 428 | 21 425 | 19 359 |
| 80-84 | 7 946 | 8 717 | 11 673 | 14 306 | 16 742 | 18 661 |
| 85-89 | 5 377 | 5 620 | 6 363 | 8 714 | 10 877 | 12 966 |
| 90-94 | 2 512 | 2 921 | 3 155 | 3 741 | 5 295 | 6 783 |
| 94-99 | 527 | 891 | 1 121 | 1 266 | 1 596 | 2 359 |
| 100 et plus | 62 | 107 | 208 | 288 | 350 | 471 |
| 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 |