| Groupe d'âge | 2016 | 2021 | 2026 | 2031 | 2036 | 2041 |
| n | ||||||
| TOTAL | 277 084 | 277 328 | 275 432 | 271 704 | 266 909 | 261 590 |
| 0-4 | 13 901 | 12 499 | 11 814 | 11 153 | 10 955 | 11 166 |
| 5-9 | 14 234 | 13 996 | 12 706 | 12 076 | 11 442 | 11 254 |
| 10-14 | 12 943 | 14 227 | 14 046 | 12 802 | 12 210 | 11 596 |
| 15-19 | 13 566 | 13 093 | 14 420 | 14 267 | 13 080 | 12 533 |
| 20-24 | 15 224 | 14 400 | 14 035 | 15 310 | 15 228 | 14 190 |
| 25-29 | 15 057 | 14 599 | 13 291 | 12 777 | 14 067 | 14 061 |
| 30-34 | 16 638 | 14 972 | 14 253 | 12 815 | 12 346 | 13 699 |
| 35-39 | 17 711 | 16 675 | 15 067 | 14 405 | 12 966 | 12 528 |
| 40-44 | 15 005 | 17 561 | 16 552 | 15 067 | 14 477 | 13 056 |
| 45-49 | 14 942 | 14 840 | 17 350 | 16 386 | 15 002 | 14 472 |
| 50-54 | 21 923 | 14 881 | 14 750 | 17 223 | 16 302 | 14 999 |
| 55-59 | 25 849 | 21 699 | 14 870 | 14 750 | 17 207 | 16 325 |
| 60-64 | 23 214 | 25 258 | 21 320 | 14 758 | 14 663 | 17 103 |
| 65-69 | 19 064 | 22 204 | 24 287 | 20 640 | 14 423 | 14 372 |
| 70-74 | 14 323 | 17 778 | 20 775 | 22 850 | 19 555 | 13 794 |
| 75-79 | 9 748 | 12 715 | 15 924 | 18 767 | 20 787 | 17 935 |
| 80-84 | 7 108 | 7 937 | 10 528 | 13 350 | 15 927 | 17 817 |
| 85-89 | 4 418 | 4 943 | 5 700 | 7 744 | 10 000 | 12 163 |
| 90-94 | 1 841 | 2 371 | 2 733 | 3 288 | 4 632 | 6 142 |
| 94-99 | 341 | 620 | 876 | 1 066 | 1 360 | 2 004 |
| 100 et plus | 34 | 60 | 135 | 210 | 280 | 381 |
| 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 |