Boulia is an outback town and locality in the Shire of Boulia, Queensland, Australia. In the 2021 census, the locality of Boulia had a population …Boulia is an outback town and locality in the Shire of Boulia, Queensland, Australia. In the 2021 census, the locality of Boulia had a population of 314 people. Boulia is the administrative centre of the Boulia Shire, population approximately 600, which covers an area of 61,176 square kilometres.