Conducting The Census
All census forms are hand-delivered by census workers during the lead-in to the census, with one form per person and a special form with questions about the dwelling. In addition, teams of census workers attempt to cover all hospitals, camp grounds, workplaces and transport systems where people might be found at midnight.
The smallest geographic unit used in the census for population data is the mesh block, which there are 39,300 of, with an average of 110 people in each.
Read more about this topic: New Zealand Census Of Population And Dwellings