Insights - New Zealand Treasury

Welcome to Insights

Informing policies and services through better information.

This website will be decommissioned at the end of July 2021

Dashboards that contain similar information can be found at:

User inputs:

Population explorer shows the key drivers of population change in New Zealand, both at a total New Zealand level and for specific territorial authorities.

(Hover your mouse over the data visualisations to reveal more information).

User inputs:

Download current data

Population directions shows how the population of New Zealand has changed over time and what has driven this change.

(Hover your mouse over the data visualisations to reveal more information. For further information about the tool see the Background section of the Population explorer page.)

User Inputs:

This page describes different groups of children and youth at risk, shows the outcomes they are projected to achieve without additional support, and maps their location so services can be better targeted to meet their needs.

User Inputs:

This page shows outcomes for youth as they transition to adulthood. It shows where they are doing well, where they may need additional support, and the parts of the country where the need is greatest.

User Inputs:

This page shows information about the use of services by children and youth at risk, and how this varies across the country. It presents a selection of education and employment services, but will expand into other areas in future.

Insights was developed by the New Zealand Treasury's Analytics and Insights team with the help of Harmonic Analytics Limited, using data from Stats NZ's Integrated Data Infrastructure (IDI). Insights is hosted by Catalyst. All information shown in Insights is anonymous. IDI data is held in a secure environment and made available to researchers under strict conditions. The analysis is protected by Stats NZ rules to ensure that no individual can be identified.

This work is part of the Treasury's commitment to higher living standards and a more prosperous, inclusive New Zealand. Insights was designed to inform effective policies and services through better information. Insights currently presents information about population change in New Zealand, and about risk, outcomes, and service use for children and youth. Over time Insights will be developed to include information on the lives of all New Zealanders.

The results from the population change tools are based on the estimated New Zealand resident population, as outlined in Identifying the New Zealand resident population in the Integrated Data Infrastructure, and are as at the end of June each year. People are considered to be resident in New Zealand if they spend at least 12 of the 16 months centred on our date of interest in the country. For example, to be considered as being resident in 2016, a person needs to spend at least 12 months in the country between October 2015 and February 2017.

The results from the children and youth tools are also based on an estimated New Zealand resident population, as outlined in Identifying the New Zealand resident population in the Integrated Data Infrastructure, and are as at the end of December each year. Temporary migrants such as international students and working holidaymakers are excluded from the results, as we have limited data about their past, and they are not eligible for many services.

Results are mapped geographically according to people's residential address. This is based on addresses collected by a number of agencies, but in some cases may be out of date or inaccurate. The quality of geographic information in the IDI is discussed in Quality of geographic information in the Integrated Data Infrastructure.

The data presented in Insights was developed by linking administrative information across government agencies. The data will not always be accurate, particularly when presented at a very detailed level. In some cases information for one person may be incorrectly linked to information for a different person. The linking process is described at Resources for IDI users along with other technical information. While the results highlight the power of using integrated administrative data in new and innovative ways, some of the methods are exploratory in nature. Caution should be taken in interpreting the results of any detailed analysis undertaken using Insights. Counts have been randomly rounded to base 3 and small counts suppressed (replaced with an s) to protect confidentiality.

For more detailed information about Insights and the data behind it see Where we come from, where we go - Describing population change in New Zealand and Insights - informing policies and services for at-risk children and youth, or contact the Analytics and Insights team at

Disclaimer: Access to the data presented was managed by Statistics New Zealand under strict micro-data access protocols and in accordance with the security and confidentiality provisions of the Statistics Act 1975. These findings are not Official Statistics. The opinions, findings, recommendations, and conclusions expressed are not those of Statistics New Zealand.

Google Analytics: This site also uses Google Analytics, a web analytics service provided by Google Inc. Google Analytics uses cookies. The information generated by the cookie about your use of the site is transmitted to, and stored by Google on servers in the United States. Google uses this information for the purpose of evaluating how you use this site, compiling reports on site activity, and providing other services relating to site activity and internet usage. Google may also transfer this information to third parties where required to do so by law, or where such third parties process the information on Google's behalf. Google will not associate your IP address with any other data held by Google. When you use this site you consent to the processing of data about you by Google, in the manner and for the purposes set out above.

Insights was created by Treasury's Analytics and Insights team, with the help of Harmonic Analytics, and using data from Stats NZ's Integrated Data Infrastructure.

The Analytics and Insights (A&I) team undertakes analysis to inform evidence based policy and practice, supporting:

  • The Treasury's strategic priorities by undertaking relevant research and analysis
  • The social sector to generate better evidence on cross-sector impacts
  • The development and use of the Integrated Data Infrastructure

  • Analytics and Insights - The Treasury

    1 The Terrace, Wellington 6011, New Zealand

    PO Box 3724, Wellington 6140, New Zealand

    Tel: +64 4 472 2733 Fax: +64 4 473 0982



    1. Purpose

    The purpose of this privacy policy is to let users of (the "Site") know when we collect personal information and what we do with it. We do not use, share or transfer personal information in connection with the Site except as set out in this policy.

    Collection, storage and use

    2. No need to disclose personal information

    The Site can be viewed without the need to disclose any personal information to us.

    3. Your disclosure of personal information

    However, you may choose to disclose personal information when adding material to the Site. Such information will be viewable by Site administrators, certain Treasury staff and contractors (including third parties providing services related to the administration, improvement, and/or securing of the Site and the information it contains ("Third Party Contractors")) and, if published, members of the public. Please do not post or otherwise transmit personal information of a sensitive nature.

    4. Holding of information

    Information (including personal information) that you provide to Treasury in electronic form will be held by the Treasury, and may be shared with, and held by, Third Party Contractors to the extent necessary for the services they provide related to the administration, improvement, and/or securing of the Treasury's ICT systems, the Site, and the information the Site contains. Email addresses provided when commenting in the discussion forum or other areas of the Site or when emailing feedback directly to the Treasury are not made available to the public. Unless required by law, we will not publicise the names or email addresses of individuals who provide feedback to us without their consent.

    5. Use of personal information

    We will only use personal information provided to us for the purposes of administering, evaluating, improving, and securing the Site and the information it contains, improving our services and communicating with you.

    6. Feedback

    Feedback is important and is used to evaluate and improve the Site. If you provide feedback on the Site directly to the Treasury via the supplied email address, that feedback will be sent to appropriate Treasury staff. We may pass on relevant comments to other people within the Treasury who administer, have contributed content to, or are otherwise interested in, the Site. This could include your email address and other identifying information.

    Statistical information and cookies

    7. Statistical information collected

    We may collect statistical information about your visit to help us improve the Site. We use Google Analytics for tracking usage of the Site. This information is aggregated and non-personally identifying. It includes:

  • your IP address;
  • the search terms you used;
  • the pages you accessed on our Site and the links you clicked on;
  • the date and time you visited the site;
  • the referring site (if any) through which you clicked through to this Site;
  • your operating system (e.g., Windows XP, Mac OS X);
  • the type of web browser you use (e.g. Internet Explorer, Mozilla Firefox); and
  • other incidental matters such as screen resolution and the language setting of your browser.
  • 8. Use of statistical information

    The statistical information referred to above will be viewable by Site administrators and certain other Treasury staff. It may also be shared with other government agencies.

    9. Cookies

    This Site generates persistent session cookies for the purpose of monitoring Site usage. The cookies do not collect personal information. You can disable them or clear them out of the web browser you are using to view this Site without affecting your ability to use the Site.

    Records and disclosure statement

    10. Public Records, Official Information and Parliament

    Your emails and contributions to the Site may constitute public records and be retained to the extent required by the Public Records Act 2005. The Treasury may also be required to disclose those materials under the Official Information Act 1982 or to a Parliamentary Select Committee or Parliament in response to a Parliamentary Question.

    Rights of access and correction

    11. Your rights

    Under the Privacy Act 1993, you have the right to access and to request correction of any of your personal information provided to the Treasury in connection with your use of this Site. If you would like to see the personal information relating to you that the Treasury has stored, or to change such personal information, or if you have any concerns regarding your privacy, please contact us at the address set out below. The Treasury may require proof of your identity before being able to provide you with any personal information.

    Privacy Officer

    The Treasury

    PO Box 3724

    Wellington 6140


    Tel: +64 4 472 2733

    Fax: +64 4 473 0982

    12. Privacy Commissioner

    If you are not satisfied with our response to any privacy-related concern you may have, you can contact the Privacy Commissioner:

    Office of the Privacy Commissioner

    PO Box 10-094

    Wellington, New Zealand

    Tel: +64 4 474 7590

    Enquiries Line (from Auckland): 302 8655

    Enquiries Line (from outside Auckland): 0800 803 909

    Fax: +64 4 474 7595