Statistical Boundaries
The Statistics New Zealand digital boundary data from the 2006 census are included with QuickMap Enterprise and SalesView. The data includes:
Meshblocks - 38,366 meshblocks covering the whole of New Zealand. They are the building blocks for all other statistical areas. 
Area units - 1860 area units covering New Zealand. These are groupings of meshblocks that typically encompass 3 - 5 thousand people.
The Statistics New Zealand digital boundary data from the 2006 census includes 38,366 meshblocks covering the whole of New Zealand. They are the building blocks for all other statistical areas. Each meshblock includes the following demographic information:
Council
Population counts, 1991, 1996, 2001, 2006.
Dwelling counts, 1991, 1996, 2001, 2006
Statistical Data: Area Units are very similar to surburbs, and are probably the only approximate definition of surburbs in New Zealand. QuickMap has added a lot of statistical data to the Area Unit based on Information provided by the Department of Statistics. This demographic data will help you assess the nature of each surburb. Information includes:
Population counts.
Population age in 5 year bands.
Ethnicity.
Number of bedrooms.
Number of Flats, Units, Townhouses or Seperate Houses.
Type of Heating (Electricity,Gas, Bottled Gas, Wood, Solar.
Employment.
Occupation.
Family size.
Income.
Rent in $20.00 bands.