Via Moody’s:
Mortgage delinquencies and defaults are more likely to occur in outer suburbs of Australian cities than inner-city areas, because of the lower average incomes and weaker credit characteristics in these suburbs.
» Delinquency rates are highest in outer suburban areas. On average across Australian cities, mortgage delinquency rates are lowest in areas within five kilometers of central business districts (CBD) and highest in areas 30-40 kilometers from CBDs. In the residential mortgage-backed securities (RMBS) we rate, delinquency rates are in many cases higher in deals with relatively large exposures to mortgages in outer areas.