This dataset is the definitive set of annually released statistical area 1 (SA1) boundaries for 2022, as defined by Stats NZ (the custodian), clipped to the coastline. This clipped version has been created for map creation/cartographic purposes and so does not fully represent the official full extent boundaries. This version contains 29,698 SA1 features.
SA1s were introduced as part of the Statistical Standard for Geographic Areas 2018 (SSGA18) which replaced the New Zealand Standard Areas Classification (NZSAC92). SA1 is an output 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. SA1s either define or aggregate to define SA2s, urban rural areas, territorial authorities, and regional councils. Some SA1s that contain apartment blocks, retirement villages, and large non-residential facilities have more than 500 residents.
This generalised version has been simplified for rapid drawing and is designed for thematic or web mapping purposes.
Digital boundary data became freely available on 1 July 2007.
The SA1 classification can also be downloaded from the Stats NZ classification and concordance tool Ariā.
|Category||Annual Boundaries > 2022|
|Tags||Clipped, Downloadable Data, SA 1, SA1, Statistical Area 1, clipped, sa 1, sa1, statistical area 1|
|Metadata||ISO 19115/19139, Dublin Core|
|Data type||Vector multipolygon||Feature count||29698|
|Attributes||SA12022_V1_00, LANDWATER, LANDWATER_NAME, LAND_AREA_SQ_KM, AREA_SQ_KM, Shape_Length|
|Services||Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed|
|Added||1 Dec 2021|
|Revisions||3 - Browse all revisions|
|Current revision||Imported on Dec. 1, 2021 from Geodatabase in NZGD2000 / New Zealand Transverse Mercator 2000. 1 geometry modified to be OGC compliant. Changelog.|
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