Thornbury is an inner-city suburb in Melbourne, Victoria, Australia, 7 km (4.3 mi) north-east of Melbourne's Central Business District, located within the City of Darebin local government area. Thornbury recorded a population of 19,005 at the 2021 census.

The City of Darebin is a local government area in Victoria, Australia, in the northern suburbs of Melbourne. It has an area of 54 square kilometres (20.8 sq mi) and in June 2018 Darebin had a population of 161,609. Municipal offices are located at 350 High Street, Preston.