Population history, 1881-1981.
Montreal
1881 140,727 (Island: 176,263)
1891 216,650 (Island: 277,525)
1901 267,730 (Island: 360,838)
1911 470,480 (Island: 554,761)
1921 618,506 (Island: 724,205)
1931 818,517 (Island: 1,003,868)
1941 903,007 (Island: 1,116,800)
1951 1,395,400
1961 2,109,509
1971 2,823,629
1981 2,828,349
Toronto
1881 86,415
1891 181,220
1901 208,040 (Greater Toronto: 238,080)
1911 378,538 (Greater Toronto: 409,925)
1921 521,893 (Greater Toronto: 611,443)
1931 631,207 (Greater Toronto: 818,348)
1941 667,567 (Greater Toronto: 909,928)
1951 1,117,470
1961 1,824,481
1971 2,699,827
1981 2,998,947
I use the CMA from 1951 on. Prior to that, Montreal Island and the current City of Toronto boundaries (Metro Toronto which came into place in 1954) are also included. Metro Toronto and CMA are the same in 1951.
Toronto as a % of Montreal
1881 61%
1891 84%
1901 64%
1911 74%
1921 84%
1931 82%
1941 81%
1951 80%
1961 86%
1971 96%
1981 106%
1881-1891: cities, 1901-1941: Greater Toronto/Montreal Island, 1951-1981: CMAs