Carrum Downs is a suburb in Melbourne, Victoria, Australia, 34 km south-east from Melbourne's central business district. Its local government area is the City of Frankston. At the 2006 Census, Carrum Downs had a population of 17,213.
Prior to December 1994 the majority of Carrum Downs was within the City of Cranbourne. However, after statewide local government reform, the suburb was moved to be part of a new, larger City of Frankston
In late 2006, RealEstatesource compiled a list of the top ten performing suburbs in Melbourne, Carrum Downs was ranked fourth with property showing a 94.4% median value increase since the real estate market's 'peak' of 2001. In January 2008, the 'Your Investment Property' periodical published an article on Carrum Downs, predicting an increased demand for residential and commercial property in the area, following the completion of the Eastlink project in June 2008.