NZ Statistical Areas 1 - Archive

Topicality: 01-01-2026 Projection: New Zealand Transverse Mercator (NZTM) This layer contains the archive of statistical area 1 (SA1) boundaries maintained by Stats NZ and as defined by Stats NZ. Statistical area 1 (SA1) is a geography that allows the release of more detailed information about population characteristics than is available at the meshblock level. Built by joining meshblocks, SA1s have an ideal size range of 100–200 residents, and a maximum population of about 500. This is to minimise suppression of population data in multivariate statistics tables. This layer get updated yearly with the latest boundary data. You can use this layer when you need any year of boundary data in your map. By setting a filter on the dataset year you can filter on specific year of the dataset. For information about the fields in this dataset go to the Data tab. The layer is further generalised by Eagle Technology for improved performance on the web, therefore it doesn't fully represent the official boundaries. If you only need the latest boundary data in your map you can use the current version of this dataset. All the current versions of Stats NZ Boundary layers can be found here. The official dataset can be found on https://datafinder.stats.govt.nz. This layer is offered by Eagle Technology (Official Esri Distributor). Eagle Technology offers services that can be used in the ArcGIS platform. The Content team at Eagle Technology updates the layers on a regular basis and regularly adds new content to the Living Atlas. By using this content and combining it with other data you can create new information products quickly and easily. If you have any questions or comments about the content, please let us now at [e-mail].