The 2001 and 2006 censuses show that affluence is disproportionately concentrated in New Zealand’s largest cities. While Auckland and Wellington had 33.2 per cent and 9.1 per cent respectively of the national population in 2006, half (56%) of New Zealand’s decile ten census area units (CAUs) from the Magnus Affluence Index were in Auckland, with another 27 per cent in Wellington.
Auckland may have the largest share of the nation’s affluent suburbs, but more of Wellington is in the affluent class than is the case in Auckland. In Auckland, 40 per cent of its CAUs are classed as affluent but in Wellington it is 54 per cent. The difference is even more stark if we take the top fifth (quintile) of CAUs from the Magnus Affluence Index. In Auckland, 60 per cent of its neighbourhoods are in the top quintile, but in Wellington it is 89 per cent (Figure 1).