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Derived from the Census question:

'From all sources of income identified, what will the total income be that you got yourself, before tax or anything was taken out of it, in the 12 months that will end on 31 March 2013?'

Te Waipounamu
Household income quartiles

Household income groups are not comparable over time because of the influences of economic change such as wage level fluctuations and inflation. The income quartile method has been adopted as the most objective method of comparing change in the income profile of a community over time. Because the quartile method derives 4 equal groups from income ranges collected by Stats New Zealand, the exact 25%, 50% and 75% cutoffs rarely fall exactly on the end of a collection range. Where they cross a range, the approximate point in the range where the cutoff would fall is estimated automatically. An inherent assumption with this method is that the income $ values within the range are uniformly distributed through the range. While this is unlikely to be the case, in the absence of other information, it is the only reasonable assumption, and when calculated for large populations (e.g. The whole of New Zealand), is a close enough approximation of reality to provide meaningful results. Quartile ranges are calculated from New Zealand total population household income data.

The data in these household tables is the number of individuals with a certain household income, rather than number of households. Household data excludes people temporarily absent from their usual residence on census night.

Household income quartiles
Te Waipounamu - Rohe20132006Change
Quartile groupNumber of Māori within rohe% of Māori within roheNew Zealand Māori population %Number of Māori within rohe% of Māori within roheNew Zealand Māori population %2006 to 2013
Lowest group12,12717.221.311,61118.818.8+516
Medium lowest18,10825.725.716,95127.526.0+1,157
Medium highest21,97431.227.819,59231.729.0+2,382
Highest group18,18025.825.313,56522.026.1+4,615

Source: Statistics New Zealand, Census of Population and Dwellings 2006 and 2013.

Quartile dollar ranges (Individuals in households)
Calculated from household income data for New Zealand total populationAnnual income by Census year
Household income quartile ranges20132006
Lowest group$0 to $33,318$0 to $26,664
Medium lowest$33,319 to $63,996$26,665 to $51,433
Medium highest$63,997 to $109,431$51,434 to $89,107
Highest group$109,432 and over$89,108 and over

Household income quartiles, 2013
Household income quartiles, 2013 Highest group, New Zealand Māori population: 25.3% Medium highest, New Zealand Māori population: 27.8% Medium lowest, New Zealand Māori population: 25.7% Lowest group, New Zealand Māori population: 21.3% Highest group, Rohe - Te Waipounamu Māori population: 25.8% Medium highest, Rohe - Te Waipounamu Māori population: 31.2% Medium lowest, Rohe - Te Waipounamu Māori population: 25.7% Lowest group, Rohe - Te Waipounamu Māori population: 17.2%
Source: Statistics New Zealand, Census of Population and Dwellings, 2013.
Change in household income quartiles, 2006 to 2013
Change in household income quartiles, 2006 to 2013 Highest group, Rohe - Te Waipounamu: +4,615 Medium highest, Rohe - Te Waipounamu: +2,382 Medium lowest, Rohe - Te Waipounamu: +1,157 Lowest group, Rohe - Te Waipounamu: +516
Source: Statistics New Zealand, Census of Population and Dwellings, 2006 and 2013.

Dominant groups

The major differences between the household income quartiles of the Māori population in Te Waipounamu Rohe and the New Zealand Māori population were:

  • A larger percentage of people living in households in the Medium highest quartile (31.2% compared to 27.8%)
  • A smaller percentage of people living in households in the Lowest group quartile (17.2% compared to 21.3%)

Emerging groups

The largest changes in the household income quartiles of the Māori population in Te Waipounamu Rohe between 2006 and 2013 were:

  • Highest group (+4,615 people)
  • Medium highest (+2,382 people)
  • Medium lowest (+1,157 people)
  • Lowest group (+516 people)