The Cairns Region began as three separate entities: the City of Cairns, the Shire of Douglas and the Shire of Mulgrave.
The City, which for most of its existence covered only the central business district and inner suburbs of Cairns, had its beginning in the Borough of Cairns which was proclaimed on 28 May 1885 under the Local Government Act 1878. With the passage of the Local Authorities Act 1902, it became a Town on 31 March 1903 and was proclaimed a City on 12 October 1923.
The Shire of Mulgrave had its origins in the Cairns Division, one of Queensland’s 74 divisions created under the Divisional Boards Act 1879 on 11 November 1879. The Douglas Division was created on 3 June 1880. They became the Shire of Cairns and the Shire of Douglas on 31 March 1903. On 20 December 1919, it grew to include some territory from the abolished Shire of Barron, and on 16 November 1940, the shire was renamed Mulgrave.