Fitzroy is an inner northern suburb of Adelaide 4 km from the Adelaide city centre, in the state of South Australia, Australia within the City of Prospect. It is adjacent to North Adelaide, Prospect, Ovingham and Thorngate. The post code for Fitzroy is 5082. It is bounded to the west by Cotton Street, to the south by Fitzroy Terrace, in the east by Prospect Road and the north by Avenue Road.