Tribal Block Groups

Tribal Block Groups This feature layer, utilizing National Geospatial Data Asset (NGDA) data from the U.S. Census Bureau (USCB), depicts American Indian tribal block groups. Per the USCB, “a tribal block group is a cluster of census tabulation blocks within a single tribal census tract delineated by American Indian tribal participants or the Census Bureau for the purpose of presenting demographic data on their reservation and/or off-reservation trust land. The tribal block groups are defined independently of the standard county-based block group delineation. For federally recognized American Indian Tribes with reservations and/or off-reservation trust lands with a population less than 1,200, a single tribal block group is defined. Qualifying reservations and/or off-reservation trust lands with a population greater than 1,200 could define additional tribal block groups within their area without regard to the standard block group configuration.” Tribal Block Groups in the Southwest Data currency: This cached Esri federal service is checked weekly for updates from its enterprise federal source (Tribal Block Groups) and will support mapping, analysis, data exports and OGC API – Feature access. NGDAID: 94 (Series Information for Tribal Block Group National TIGER/Line Shapefiles, Current) OGC API Features Link: (Tribal Block Groups - OGC Features) copy this link to embed it in OGC Compliant viewers For more information, please visit: 2020 Census Participant Statistical Areas Program (PSAP) For feedback please contact: [e-mail] NGDA Data Set This data set is part of the NGDA Governmental Units, and Administrative and Statistical Boundaries Theme Community. Per the Federal Geospatial Data Committee (FGDC), this theme is defined as the “boundaries that delineate geographic areas for uses such as governance and the general provision of services (e.g., states, American Indian reservations, counties, cities, towns, etc.), administration and/or for a specific purpose (e.g., congressional districts, school districts, fire districts, Alaska Native Regional Corporations, etc.), and/or provision of statistical data (census tracts, census blocks, metropolitan and micropolitan statistical areas, etc.). Boundaries for these various types of geographic areas are either defined through a documented legal description or through criteria and guidelines. Other boundaries may include international limits, those of federal land ownership, the extent of administrative regions for various federal agencies, as well as the jurisdictional offshore limits of U.S. sovereignty. Boundaries associated solely with natural resources and/or cultural entities are excluded from this theme and are included in the appropriate subject themes.” For other NGDA Content: Esri Federal Datasets部落街区组（Tribal Block Groups） 本要素图层采用美国人口普查局（U.S. Census Bureau, USCB）发布的国家地理空间数据资产（National Geospatial Data Asset, NGDA）数据，用于呈现美国印第安部落街区组。根据美国人口普查局的官方定义："部落街区组是指由美国印第安部落参与方或人口普查局划定的、隶属于单个部落普查片区的普查制表区块集群，旨在呈现其保留地及/或保留地外信托土地的人口统计数据。部落街区组的划定独立于标准的以县为基准的街区组划分规则。对于拥有保留地及/或保留地外信托土地、人口少于1200的联邦认可美国印第安部落，将划定单个部落街区组；人口超过1200的符合条件的保留地及/或保留地外信托土地，可在其辖区内划定额外的部落街区组，无需遵循标准街区组的配置规范。" 西南部部落街区组 数据时效性：本缓存版Esri联邦服务每周会从其企业级联邦数据源（部落街区组）检查更新，可支持制图、空间分析、数据导出以及OGC API – 要素服务（OGC API – Feature）访问。 NGDAID：94（《部落街区组全国TIGER/Line形状文件系列信息，当前版本》） OGC API要素链接：（部落街区组 - OGC要素服务）请复制此链接以嵌入符合OGC标准的地理空间查看器中。 如需了解更多信息，请访问：2020年普查参与方统计区域项目（Participant Statistical Areas Program, PSAP） 反馈请联系：[e-mail] NGDA数据集 本数据集隶属于国家地理空间数据资产（NGDA）的「政府单元、行政与统计边界主题社区」。根据联邦地理空间数据委员会（Federal Geospatial Data Committee, FGDC）的定义，该主题涵盖"用于治理及通用公共服务（如州、美国印第安保留地、县、城市、城镇等）、行政管理或特定专项用途（如国会选区、学区、消防区、阿拉斯加原住民区域公司等），以及提供统计数据支撑（如普查片区、普查区块、大都市和小城市统计区域等）的地理区域划定边界。上述各类地理区域的边界可通过已备案的法律描述文件，或统一的标准准则与指南进行划定。其他边界类型包括国际边界、联邦土地所有权边界、各联邦机构的行政管辖区域范围，以及美国主权管辖的近海边界。仅与自然资源和/或文化实体相关的边界不属于本主题范畴，应归入对应的专业主题中。" 如需获取其他NGDA内容，请访问：Esri联邦数据集