Blackall-Tambo Regional Council was formed in 2008 by the amalgamation of Blackall and Tambo Shires. Its area is 30,489 sq km, and the town of Blackall (the regional council's headquarters) is 500 km south-west of Rockhampton. Blackall-Tambo Regional Council's eastern and western boundaries are in the vicinities of Carnarvon National Park and the railway line just short of Emmet. Its southern limit is at the same latitude as Augathella.

Blackall is towards the north of the regional council area. It is on the Landsborough Highway and a branch railway (1908) from the Central Western line from Rockhampton. The branch railway continues on to Yaraka in neighbouring Longreach Regional Council. It is important for livestock transport. Livestock from the Tambo district can be taken either by road to the coast or to rail transport at Blackall or Charleville.

Blackall is towards the north-west of the Blackall-Tambo Regional Council and Tambo is toward the south-east. Their hinterlands rise to the Warrego and Cowan Ranges which form watersheds for numerous rivers, including the Barcoo and the Bulloo. Part of the Gowan Range is in Idalia National Park in the far west of the Blackall-Tambo Regional Council. The park is noted for river red gums along ephemeral water-courses, backed by rugged escarpments.

Blackall-Tambo Regional Council's census populations have been:

census datepopulation
20062106
20112200
Further Reading: 

Blackall and Blackall Shire and Tambo Shire entries