Canberra’s wealthiest continue to reside in postcode 2603 – covering Forrest, Griffith, Manuka and Red Hill – but were joined by their neighbours in Barton, Deakin and Yarralumla to crack the mark.

Hall residents and others in postcode 2618 enjoyed the largest income growth over the 2010-11 financial year, when taxable incomes were up 13 per cent for the 625 people included.

The localised figures issued by the Australion Taxation Office confirm Canberra’s relatively homogenous income range, with the poorest suburbs in the north-west averaging individual incomes of $61,718.

Click on your suburb in the map above to see average taxable income. Source: ATO

The gap between the richest and poorest suburbs did however increase, with income in the wealthiest five suburbs up an average 8.4 per cent, compared to a 4.2 per cent growth in the five poorest over the 12 months covered.

The figures, measuring mean taxable income by taxable individuals, found all ACT postcodes experienced income growth of 4 per cent or more.

Sydney’s postcode 2027 – covering the harbourside suburbs of Darling Point, Edgecliff, Point Piper and HMAS Rushcutters – retained its title as Australia’s wealthiest, where residents incomes were up an average 12 per cent to $203,271.

Sydney was home to six of the nation’s 10 richest postcodes. Two Victorian and two West Australian postcodes also made the list.

Australia’s poorest individuals can receive a letter mailed to postcode 3833, with the 100 taxable residents in the Mount Baw Baw area east of Melbourne earning an average $38,323 in 2010-11.