Statistical Area 1 2026

Description Refer to the current geographies boundaries table for a list of all current geographies and recent updates. This dataset is the definitive version of the statistical area 1 (SA1) boundaries as at 1 January 2026, as defined by Stats NZ. This version contains 33,170 SA1s (33,154 digitised and 16 with empty or null geometries (non-digitised)). SA1 is an output geography that allows the release of more low-level data 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. The SA1 should: form a contiguous cluster of one or more meshblocks, be either urban, rural, or water in character, be small enough to: allow flexibility for aggregation to other statistical geographies, allow users to aggregate areas into their own defined communities of interest, form a nested hierarchy with statistical output geographies and administrative boundaries. It must: be built from meshblocks, either define or aggregate to define SA2s, urban rural areas, territorial authorities, and regional councils. SA1s generally have a population of 100–200 residents, with some exceptions: SA1s with nil or nominal resident populations are created to represent remote mainland areas, unpopulated islands, inland water, inlets, or oceanic areas. Some SA1s in remote rural areas and urban industrial or business areas have fewer than 100 residents. Some SA1s that contain apartment blocks, retirement villages, and large non-residential facilities (prisons, boarding schools, etc.) have more than 500 residents. SA1 numbering SA1s are not named. SA1 codes have seven digits starting with a ‘7’ and are numbered approximately north to south. Non-digitised codes start with 79. As new SA1s are created, they are given the next available numeric code. If the composition of an SA1 changes through splitting or amalgamating different meshblocks, the SA1 is given a new code. The previous code no longer exists within that version and future versions of the SA1 classification. Lineage These boundaries are derived from the meshblock pattern. Using spatial processing tools, the meshblocks are dissolved to form higher-level geographies. The original vertices delineating the meshblock boundary pattern were digitised in 1991 from 1:5,000 scale urban maps and 1:50,000 scale rural maps. The magnitude of error of the original digital points would have been in the range of +/- 10 metres in urban areas and +/- 25 metres in rural areas. Where meshblock boundaries coincide with cadastral boundaries the magnitude of error will be within the range of 1–5 metres in urban areas and 1-100 metres in rural areas, this being the estimated magnitude of error in Landonline. Digitised and non-digitised SA1s The digital geographic boundaries are defined and maintained by Stats NZ. Aggregated from meshblocks, SA1s cover the land area of New Zealand, the water area to the 12-mile limit, the Chatham Islands, Kermadec Islands, sub-Antarctic islands, off-shore oil rigs, and Ross Dependency. The following 16 SA1s are held in non-digitised form. 7999901; New Zealand Economic Zone, 7999902; Oceanic Kermadec Islands,7999903; Kermadec Islands, 7999904; Oceanic Oil Rig Taranaki,7999905; Oceanic Campbell Island, 7999906; Campbell Island, 7999907; Oceanic Oil Rig Southland, 7999908; Oceanic Auckland Islands, 7999909; Auckland Islands, 7999910; Oceanic Bounty Islands, 7999911; Bounty Islands, 7999912; Oceanic Snares Islands, 7999913; Snares Islands, 7999914; Oceanic Antipodes Islands, 7999915; Antipodes Islands, 7999916; Ross Dependency. High-definition version This high definition (HD) version is the most detailed geometry, suitable for use in GIS for geometric analysis operations and for the computation of areas, centroids and other metrics. Liability While care has been taken to compile these boundary coordinates, Stats NZ gives no warranty that the data supplied is free from error. Stats NZ shall not be liable for any loss suffered through the use, directly or indirectly, of any information, product or service. Macrons Names are provided with and without tohutō/macrons. The column name for those without macrons is suffixed ‘ascii’. Digital data Digital boundary data became freely available on 1 July 2007 Further information To download geographic classifications in table formats such as CSV please use Ariā For more information please refer to the Statistical standard for geographic areas 2023. Contact: [e-mail]数据集说明：请查阅当前地理边界表，获取所有现行地理区域及最新更新的列表。 本数据集为新西兰统计局（Stats NZ）定义的、截至2026年1月1日的权威版统计区域1（statistical area 1, SA1）边界数据。本版本共包含33170个SA1区域，其中33154个已完成数字化，另有16个几何信息为空或无效（未数字化）。 SA1是一种输出型地理分区，相较于网格区块（meshblock）层级，可发布更细粒度的统计数据。SA1由多个网格区块合并构建而成，理想人口规模为100至200人，最大人口不超过约500人，以此最大限度降低多元统计表格中人口数据的披露抑制。 SA1需满足以下要求：由一个或多个网格区块组成连续连片区域，具备城镇、乡村或水域属性；尺寸需足够小巧，以实现向其他统计地理分区的灵活聚合，支持用户将区域聚合为自定义的兴趣社区，与统计输出地理分区及行政边界形成嵌套层级结构。 其构建必须基于网格区块，可直接定义或通过聚合定义统计区域2（SA2）、城乡区域、地方当局及区域议会辖区。 SA1的常规人口规模为100至200人，但存在部分例外：为覆盖偏远本土区域、无居民岛屿、内陆水域、海湾或远洋区域，会设置人口为零或名义人口的SA1；偏远乡村区域、城镇工业区或商业区的部分SA1人口不足100人；包含公寓楼、退休社区以及大型非住宅设施（监狱、寄宿学校等）的部分SA1人口则超过500人。 SA1编码规则：SA1无专属名称。SA1编码为7位数字，以字符‘7’开头，编码顺序大致遵循从北到南。未数字化的SA1编码以‘79’开头。新增SA1将分配当前可用的下一个数字编码。若SA1因拆分或合并不同网格区块导致组成发生变更，则会被赋予新编码，原编码在该版本及后续SA1分类版本中将不再生效。 数据溯源：本边界数据源自网格区块边界体系。通过空间处理工具合并网格区块，可生成更高层级的地理分区。1991年，研究人员从1:5000比例尺城镇地图及1:50000比例尺乡村地图中数字化提取了网格区块边界的原始顶点。原始数字化点位的误差范围为：城镇区域±10米，乡村区域±25米。当网格区块边界与地籍边界重合时，误差范围为城镇区域1至5米，乡村区域1至100米，该数值为Landonline系统的估算误差范围。 数字化与未数字化SA1：数字化地理边界由新西兰统计局定义并维护。SA1由网格区块聚合而成，覆盖新西兰本土陆地、12海里范围内水域、查塔姆群岛、克马德克群岛、亚南极群岛、海上石油钻井平台以及罗斯属地。 以下16个SA1为未数字化形式： 7999901；新西兰经济区 7999902；克马德克群岛水域 7999903；克马德克群岛 7999904；塔拉纳基海域石油钻井平台 7999905；坎贝尔岛水域 7999906；坎贝尔岛 7999907；南地海域石油钻井平台 7999908；奥克兰群岛水域 7999909；奥克兰群岛 7999910；邦蒂群岛水域 7999911；邦蒂群岛 7999912；斯奈尔斯群岛水域 7999913；斯奈尔斯群岛 7999914；安蒂波德斯群岛水域 7999915；安蒂波德斯群岛 7999916；罗斯属地 高清版本：本高清（HD）版本拥有最精细的几何精度，适用于地理信息系统（GIS）中的几何分析操作，以及面积、质心及其他指标的计算。 责任声明：尽管新西兰统计局在编制本边界坐标时已尽审慎义务，但不对所提供数据的无差错性作出任何明示或默示保证。对于因直接或间接使用任何信息、产品或服务而遭受的任何损失，新西兰统计局不承担任何责任。 长音符号：名称同时提供带长音符号（tohutō）和不带长音符号的版本。不带长音符号的列名后缀为‘ascii’。 数字数据：本数字边界数据自2007年7月1日起免费开放。 更多信息：如需下载CSV等表格格式的地理分类数据，请使用Ariā平台。更多详情请参阅《2023年地理区域统计标准》。 联系方式：[e-mail]