Industry diversity: Auckland View this page in the refreshed REP

The more concentrated a region or district’s economic activity is within a few industries, the more vulnerable it is to adverse effects, such as those arising from climatic conditions or commodity price fluctuations.

This section presents the normalised Herfindahl–Hirschman Index (HHI)i which measures the level of diversification of the Auckland economy. An index of 0 represents a diversified economy with economic activity evenly spread across all industries. The higher the index, the more concentrated economic activity is on a few industries. As the whole of the country will usually be more diverse than individual regions, we use the average of the 66 territorial authorities for the New Zealand number.

HHI Index in Auckland and comparator, 2000 - 2022