ISO 19139 Geographic Information - Metadata - Implementation Specification
Metadata Standard Version
2007
Spatial Representation Info
Vector Spatial Representation
Topology Level Code
geometryOnly
Geometric Object Type Code
composite
Integer
29895
Reference System Info
Reference System
Reference System Identifier
Identifier
Code
2193
Code Space
EPSG
Version
8.6.2
Identification Info
Data Identification
Citation
Citation
Title
SA1HG2020_V1_00
Date
Presentation Form
Presentation Form Code
mapDigital
Abstract
This dataset is the definitive set of statistical area 1 (SA1) boundaries concorded to higher geographies for 2020. This version contains 29,895 SA1sincluding 16 with empty or null geometries (non-digitised SA1s). This generalised version has been simplified for rapid drawing and is designed for thematic or web mapping purposes.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.This SA1 higher geographies 2020 file is a correspondence, or concordance, which relates SA1s to larger geographic areas or 'higher geographies'. The higher geographies contained in this concordance are: regional council (REGC2020), statistical area 2 (SA22020), territorial authority (TA2020), urban rural (UR2020), and urban rural indicator (IUR2020).The following geographies were introduced in 2018: statistical area 1 (SA1), statistical area 2 (SA2), urban rural (UR), and urban rural indicator (IUR) as part of the Statistical Standard for Geographic Areas 2018(SSGA18) which replaced the 1992 New Zealand Standard Areas Classification (NZSAC92). Higher geography names are provided with and without tohutō/macrons, as applicable. Column names for those without macrons are suffixed ‘ascii’.For further information on individual higher geographies, refer to their metadata.Digital boundary data became freely available on 1 July 2007.
Purpose
This dataset is the definitive version of the annually released statistical area 1 (SA1) boundaries concorded to higher geographies as at 1 January 2020. This version contains 29,895 SA1s.
Credit
Stats NZ
Point Of Contact
Responsible Party
Individual Name
Geospatial Team
Organisation Name
Stats NZ
Contact Info
Contact
Address
Address
Electronic Mail Address
geography@stats.govt.nz
Online Resource
Online Resource
Linkage
URL
https://datafinder.stats.govt.nz/
Role
Role Code
owner
Descriptive Keywords
Keywords
Keyword
Downloadable Data
Descriptive Keywords
Keywords
Keyword
Statistical Area 1
Keyword
statistical area 1
Keyword
SA1
Keyword
SA 1
Keyword
sa1
Keyword
sa 1
Keyword
Statistics New Zealand
Keyword
Stats NZ
Keyword
Statistics NZ
Keyword
higher geography
Keyword
Higher Geography
Keyword
SA1HG
Resource Constraints
Constraints
Use Limitation
Creative Commons Attribution 4.0 International (CC BY 4.0)
Spatial Representation Type Code
vector
Language
Language Code
eng
Character Set
Character Set Code
utf8
Topic Category Code
boundaries
Version 6.2 (Build 9200) ; Esri ArcGIS 10.3.1.4959
SA1s are based on the meshblock pattern. Non-alignment of meshblock to cadastral boundaries is one of a number of reasons for meshblock boundary adjustments. Other reasons include requests from local authorities, Local Government Commission, Electoral Representation Commission, and to make census enumeration processes easier. From the meshblock pattern, higher geographies, including the 2020 SA1 pattern, were dissolved using the dissolve tool in the Arc GIS suite.
