Kumbia is a rural town and locality in the South Burnett Region, Queensland, Australia. In the 2021 census, the locality of Kumbia ha…Kumbia is a rural town and locality in the South Burnett Region, Queensland, Australia. In the 2021 census, the locality of Kumbia had a population of 301 people. The town is located on the Bunya Highway. It is the main street for the town, but is known with the town as Bell Street.