Boyer is a rural locality in the local government areas of Brighton and Derwent Valley in the Hobart and South-east LGA regions of Tasman…Boyer is a rural locality in the local government areas of Brighton and Derwent Valley in the Hobart and South-east LGA regions of Tasmania. The locality is about 18 kilometres south-west of the town of Brighton. The 2016 census recorded a population of 40 for the state suburb of Boyer. It is a town on the eastern side of the River Derwent, opposite and slightly downstream of New Norfolk.