Update on release of 2018 Census data – Media release
10 July 2018
Stats NZ has revised the date for first release of census information from October 2018 to March 2019.
We will confirm the exact response and the coverage rates for the census after we complete our reconciliation processes.
Stats NZ’s interim calculations show that full or partial information for at least 90 percent of individuals was
received, compared with 94.5 percent for the 2013 Census.
As with previous censuses, we will use statistical methodology to compensate for missing data. For the 2018 Census we
are revising this methodology because of the lower-than-expected response. We are discussing this new methodology with
our technical customers. We’re also undertaking analysis on how to improve data for small populations, subgroups, and
small geographies. The new date for our first release will give us time to develop revised methodology for processing
and analysing census data. We are committed to delivering a high-quality and accurate dataset.
There is a long term, international trend of declining census response rates. Because of this we have made a strategic
decision to use more administrative data to improve the quality of census data.
Stats NZ is in a good position to adopt this approach as we have been investigating future census models that would
supplement census data with administrative data.