Statistical Area 3 2025

This dataset is the definitive version of the annually released statistical area 3 (SA3) boundaries as at 1 January 2025 as defined by Stats NZ. This version contains 929 SA3s, including 4 non-digitised SA3s. The SA3 geography aims to meet three purposes: 1. approximate suburbs in major, large, and medium urban areas, 2. in predominantly rural areas, provide geographical areas that are larger in area and population size than SA2s but smaller than territorial authorities, 3. minimise data suppression. SA3s in major, large, and medium urban areas were created by combining SA2s to approximate suburbs as delineated in the Fire and Emergency NZ (FENZ) Localities dataset. Some of the resulting SA3s have very large populations. Outside of major, large, and medium urban areas, SA3s generally have populations of 5,000–10,000. These SA3s may represent either a single small urban area, a combination of small urban areas and their surrounding rural SA2s, or a combination of rural SA2s. Zero or nominal population SA3s To minimise the amount of unsuppressed data that can be provided in multivariate statistical tables, SA2s with fewer than 1,000 residents are combined with other SA2s wherever possible to reach the 1,000 SA3 population target. However, there are still a number of SA3s with zero or nominal populations. Small population SA2s designed to maintain alignment between territorial authority and regional council geographies are merged with other SA2s to reach the 5,000–10,000 SA3 population target. These merges mean that some SA3s do not align with regional council boundaries but are aligned to territorial authority. Small population island SA2s are included in their adjacent land-based SA3. Island SA2s outside territorial authority or region are the same in the SA3 geography. Inland water SA2s are aggregated and named by territorial authority, as in the urban rural classification. Inlet SA2s are aggregated and named by territorial authority or regional council where the water area is outside the territorial authority. Oceanic SA2s translate directly to SA3s as they are already aggregated to regional council. The 16 non-digitised SA2s are aggregated to the following 4 non-digitised SA3s (SA3 code; SA3 name): 70001; Oceanic outside region, 70002; Oceanic oil rigs, 70003; Islands outside region, 70004; Ross Dependency outside region. SA3 numbering and naming Each SA3 is a single geographic entity with a name and a numeric code. The name refers to a suburb,recognised place name, or portion of a territorial authority. In some instances where place names are the same or very similar, the SA3s are differentiated by their territorial authority, for example, Hillcrest (Hamilton City) and Hillcrest (Rotorua District). SA3 codes have five digits. North Island SA3 codes start with a 5, South Island SA3 codes start with a 6 and non-digitised SA3 codes start with a 7. They are numbered approximately north to south within their respective territorial authorities. When first created in 2025, the last digit of each code was 0. When SA3 boundaries change in future, only the last digit of the code will change to ensure the north-south pattern is maintained. 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. The HD version is aligned to the LINZ cadastre. 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]本数据集为新西兰统计局（Stats NZ）于2025年1月1日发布的年度正式版统计区域3（Statistical Area 3, SA3）边界数据集。本版本共包含929个SA3区域，其中含4个未数字化的SA3区域。 SA3地理分区旨在满足三大用途：1. 近似大型、特大型及中型都市区的郊区范围；2. 在以乡村为主的区域，提供面积和人口规模介于统计区域2（Statistical Area 2, SA2）与地方当局辖区之间的地理分区；3. 最大限度减少需执行数据抑制的场景。 大型、特大型及中型都市区内的SA3区域由SA2区域合并而成，以匹配新西兰消防与应急局（Fire and Emergency NZ, FENZ）的《辖区数据集》中划定的郊区范围。部分合并后生成的SA3区域人口规模较大。在大型、特大型及中型都市区以外的区域，SA3的人口规模通常为5000-10000人，这类区域可能代表单个小型都市区、多个小型都市区及其周边乡村SA2区域的组合，或多个乡村SA2区域的组合。 零人口或名义人口SA3区域 为减少多变量统计表格中可发布的未抑制数据量，凡居民不足1000人的SA2区域，将尽可能与其他SA2区域合并，以达成SA3区域1000人的人口阈值要求。但仍存在部分人口为零或名义人口的SA3区域。 为维持地方当局与大区议会的地理边界对齐，部分人口规模较小的SA2区域将与其他SA2区域合并，以达到SA3区域5000-10000人的人口规模目标。此类合并可能导致部分SA3区域与大区议会的辖区边界不一致，但仍与地方当局的辖区边界保持对齐。位于岛屿上的人口规模较小的SA2区域将归入其相邻的陆地SA3区域。不属于任何地方当局或大区的岛屿SA2区域，在SA3地理分区中保持原有形态。 内陆水域SA2区域将按地方当局进行聚合并命名，沿用城乡分类规则。海湾水域SA2区域将按所属地方当局聚合命名；若水域超出地方当局管辖范围，则按大区议会聚合命名。海洋SA2区域已按大区议会完成聚合，因此可直接映射为SA3区域。 16个未数字化的SA2区域将聚合为以下4个未数字化SA3区域（SA3代码；SA3名称）：70001；大区外海洋区域，70002；大区外海洋钻井平台区域，70003；大区外岛屿区域，70004；罗斯属地外区域。 SA3编号与命名 每个SA3区域均为单一地理实体，配有专属名称及五位数字代码。其名称可对应某一郊区、公认地名，或地方当局辖区的一部分。当地名相同或高度相似时，SA3区域将通过所属地方当局加以区分，例如汉密尔顿市的希尔克雷斯特与罗托鲁瓦区的希尔克雷斯特。SA3代码均为五位数字：北岛SA3代码以5开头，南岛SA3代码以6开头，未数字化SA3代码以7开头。各地方当局辖区内的SA3代码大致按由北至南的顺序编排。2025年首次发布本数据集时，所有SA3代码的最后一位均为0。未来若SA3边界发生调整，仅修改代码的最后一位，以维持由北至南的编号规律。 高清版本 本高清（High Definition, HD）版本为最精细的几何形态，适用于地理信息系统（Geographic Information System, GIS）中的几何分析操作，以及面积、质心及其他空间指标的计算。该高清版本与新西兰土地信息局（Land Information New Zealand, LINZ）的地籍数据对齐。 长音符号 地名包含带托胡托长音符号（tohutō/macrons）与不带长音符号两种形式，不带长音符号的列名后缀为"ascii"。 数字数据 本数字边界数据集已于2007年7月1日正式免费对外开放。 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。更多详细内容请参阅《2023年地理区域统计标准》。联系方式：[e-mail]