Australians dug deep for charity last year, but not all suburbs were equally charitable.
Data from National Australia Bank shows the affluent enclaves of Middle Park in Melbourne and Mosman in Sydney made the biggest average donations, but it was a different story when suburbs were ranked by giving as a share of income. 
By this measure, Castlemaine in Victoria, parts of the Blue Mountains in NSW, and Melbourne's Brunswick and Fitzroy were among the most generous areas.
NAB on Tuesday said its charitable giving index, based on customer transaction data, jumped to 6.5 per cent growth in the year to   February, more than twice the pace of 2.4 per cent growth a year earlier. The average donation size grew by $12 to $348.
NAB declined to provide figures on which suburbs donated the lowest proportion of their incomes to charity.
Growth in charitable giving was strongest among people over 65, with 12 per cent growth, NAB said.
The only age group where giving declined was among younger Australians aged 15-24. Younger people tended to earn less than older people and had higher rates of unemployment and job uncertainty, it said.