Meshblock 2025

This dataset is the definitive version of the annually released meshblock boundaries as at 1 January 2025 as defined by Stats NZ. This version contains 57,551 meshblocks, including 16 with empty or null geometries (non-digitised meshblocks). Stats NZ maintains an annual meshblock pattern for collecting and producing statistical data. This allows data to be compared over time. A meshblock is the smallest geographic unit for which statistical data is collected and processed by Stats NZ. A meshblock is a defined geographic area, which can vary in size from part of a city block to a large area of rural land. The optimal size for a meshblock is 30–60 dwellings (containing approximately 60–120 residents). Each meshblock borders on another to form a network covering all of New Zealand, including coasts and inlets and extending out to the 200-mile economic zone (EEZ) and is digitised to the 12-mile limit. Meshblocks are added together to build up larger geographic areas such as statistical area 1 (SA1), statistical area 2 (SA2), statistical area 3 (SA3), and urban rural (UR). They are also used to define electoral districts, territorial authorities, and regional councils. Meshblock boundaries generally follow road centrelines, cadastral property boundaries, or topographical features such as rivers. Expanses of water in the form of lakes and inlets are defined separately from land. Meshblock maintenance Meshblock boundaries are amended by: 1. Splitting – subdividing a meshblock into two or more meshblocks. 2. Nudging – shifting a boundary to a more appropriate position. Reasons for meshblock splits and nudges can include: ·to maintain meshblock criteria rules. ·to improve the size balance of meshblocks in areas where there has been population growth ·to maintain alignment to cadastre and other geographic features. ·Stats NZ requests for boundary changes so that statistical geography boundaries can be moved ·external requests for boundary changes so that administrative or electoral boundaries can be moved ·to separate land and water. Mainland, inland water, islands, inlets, and oceanic are defined separately Meshblock changes are made throughout the year. A major release is made at 1 January each year with ad hoc releases available to users at other times. While meshblock boundaries are continually under review, 'freezes' on changes to the boundaries are applied periodically. Such 'freezes' are imposed at the time of population censuses and during periods of intense electoral activity, for example, prior and during general and local body elections. Meshblock numbering Meshblocks are not named and have seven-digit codes. When meshblocks are split, each new meshblock is given a new code. The original meshblock codes no longer exist within that version and future versions of the meshblock classification. Meshblock codes do not change when a meshblock boundary is nudged. Meshblocks that existed prior to 2015 and have not changed are numbered from 0000100 to 3210003. Meshblocks created from 2015 onwards are numbered from 4000000. Digitised and non-digitised meshblocks The digital geographic boundaries are defined and maintained by Stats NZ. Meshblocks cover the land area of New Zealand, the water area to the 12mile limit, the Chatham Islands, Kermadec Islands, sub-Antarctic islands, offshore oil rigs, and Ross Dependency. The following 16 meshblocks are not held in digitised form. Meshblock Location (statistical area 2 name) 0016901 Oceanic Kermadec Islands 0016902 Kermadec Islands 1588000 Oceanic Oil Rig Taranaki 3166401 Oceanic Campbell Island 3166402 Campbell Island 3166600 Oceanic Oil Rig Southland 3166710 Oceanic Auckland Islands 3166711 Auckland Islands 3195000 Ross Dependency 3196001 New Zealand Economic Zone 3196002 Oceanic Bounty Islands 3196003 Bounty Islands 3196004 Oceanic Snares Islands 3196005 Snares Island 3196006 Oceanic Antipodes Islands 3196007 Antipodes Islands 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）定义的、截至2025年1月1日的年度发布统计地块（meshblock）边界最终版本。本版本共包含57551个统计地块，其中包含16个几何为空或空值的未数字化统计地块。 新西兰统计局每年维护统计地块体系，用于收集与生成统计数据，以实现跨时间维度的数据对比。统计地块是新西兰统计局收集并处理统计数据的最小地理单元，其划定的地理区域规模跨度极大，可小至城市街区的一部分，大至大片农村土地。统计地块的理想规模为30至60处住宅（对应约60至120名居民）。 所有统计地块彼此邻接，形成覆盖新西兰全境的地理网络，涵盖海岸与海湾，并延伸至200海里专属经济区（EEZ），且数字化范围至12海里界限。 统计地块可聚合为更大的地理区域，例如统计区域1（statistical area 1, SA1）、统计区域2（statistical area 2, SA2）、统计区域3（statistical area 3, SA3）以及城乡区域（urban rural, UR）。此外，统计地块还被用于划定选举选区、地方当局辖区与区域议会辖区。 统计地块边界通常遵循道路中心线、地籍产权边界或河流等地形特征。湖泊与海湾等水域区域与陆地区域分别单独划定。 ### 统计地块维护 统计地块边界的修正方式包括： 1. 拆分：将一个统计地块划分为两个或多个统计地块； 2. 微调：将边界调整至更合适的位置。 统计地块拆分与微调的原因包括： · 维持统计地块的标准规则； · 针对人口增长区域优化统计地块的规模平衡性； · 保持与地籍及其他地理特征的一致性； · 新西兰统计局提出的边界变更请求，以调整统计地理边界； · 外部提出的边界变更请求，以调整行政或选举边界； · 分离陆域与水域区域。 大陆、内陆水域、岛屿、海湾以及海洋区域均分别单独划定。 统计地块的调整工作全年持续开展，每年1月1日发布正式版本，其余时间可向用户提供临时更新版本。尽管统计地块边界始终处于审查状态，但会定期实施边界变更冻结。此类冻结通常在人口普查期间以及选举活动密集期实施，例如大选及地方选举的前后及举办期间。 ### 统计地块编号 统计地块无专属名称，采用7位数字编码。当统计地块被拆分时，每个新生成的统计地块将获得全新编码，原编码在该版本及后续版本的统计地块分类体系中将不再使用。仅微调边界的统计地块，其编码保持不变。 2015年之前存在且未发生变更的统计地块，编码范围为0000100至3210003；2015年及之后新增的统计地块，编码起始于4000000。 ### 数字化与未数字化统计地块 数字地理边界由新西兰统计局定义并维护。统计地块覆盖新西兰陆地面积、12海里以内的水域、查塔姆群岛、克马德克群岛、亚南极群岛、近海石油钻井平台以及罗斯属地。以下16个统计地块未以数字化形式存储： 0016901 海洋区域 克马德克群岛 0016902 克马德克群岛 1588000 海洋区域 塔拉纳基近海石油钻井平台 3166401 海洋区域 坎贝尔岛 3166402 坎贝尔岛 3166600 海洋区域 南地近海石油钻井平台 3166710 海洋区域 奥克兰群岛 3166711 奥克兰群岛 3195000 罗斯属地 3196001 新西兰专属经济区 3196002 海洋区域 邦蒂群岛 3196003 邦蒂群岛 3196004 海洋区域 斯奈尔斯群岛 3196005 斯奈尔斯岛 3196006 海洋区域 安蒂波德斯群岛 3196007 安蒂波德斯群岛 ### 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。该高清版本与新西兰土地信息局（LINZ）的地籍数据对齐。 ### 长音符号 地名同时提供带毛利语长音符号（tohutō/macrons）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 数字边界数据于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。如需了解更多信息，请参阅《2023年地理区域统计标准》。 联系方式：[e-mail]