1956 77,600 1961 92,490 1966 104,539 1971 108,411 1976 111,476 1981 112,486 1986 112,272 1991 113,946 1996 113,662 2001 109,016 2006 109,140 According to the 2006 Census , there were 109,140 people residing in Thunder Bay on 16 May 2006 , of whom 48.4% were male and 51.6% were female. Residents 19