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This dataset was first added to Stats NZ Geographic Data Service on 07 Dec 2020.
This dataset is the definitive set of annually released statistical area 1 (SA1) boundaries for 2021 as defined by Stats NZ. This version contains 29,910 SA1 categories.
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 a new 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.
Creative Commons Attribution 4.0 International
You may use this work for commercial purposes.
You must attribute the creator in your own works.
Information | |
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Category | Annual Boundaries > 2021 |
Tags | 2021, Downloadable Data, SA 1, SA1, Statistical Area 1, Stats NZ, statistical area 1 |
Regions | New Zealand |
Metadata | ISO 19115/19139, Dublin Core |
Technical Details | |
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Layer ID | 105162 |
Data type | Vector multipolygon | Feature count | 29910 (incl. 16 with empty or null geometries) |
Attributes | SA12021_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 |
History | |
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Added | 7 Dec 2020 |
Revisions | 2 - Browse all revisions |
Current revision | Imported on Dec. 7, 2020 from Geodatabase in NZGD2000 / New Zealand Transverse Mercator 2000. 3 geometries modified to be OGC compliant. Changelog. |
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