The CBD has highest proportion of share houses in the state, according to a recent analysis by website flatmates.com.au.
According to Flatmates, 19 per cent of CBD dwellings are shared by people who previously did not know each other.
The CBD was followed by West Melbourne (14 per cent), Southbank (13 per cent), Parkville and Abbotsford (both 12 per cent) and Carlton (10 per cent).
The analysis found that 26 postcodes across Australia had at least one in 10 dwellings that were being shared.
Flatmates achieved the results through analysis of share home listings created in the past 12 months and private dwelling data from the Bureau of Statistics.