Civil Township Boundaries 2021

Civil townships are a unit of local government, typically subordinate to the County. In Indiana, each township is served by an elected township trustee. Civil townships are primarily represented as Minor Civil Divisions (MCDs) in the source data by the US Census Bureau. Per the US Census, MCDs are the primary governmental or administrative divisions of a county in many states. This data mostly contains MCD boundaries, with some corrected township boundaries (see explanation below). On 1/3/2024, IGIO staff updated the boundaries and/or attributes of 6 townships: Center (Delaware Co), Mount Pleasant (Delaware Co), Eagle (Boone Co), Perry (Boone Co), Union (Boone Co), and Worth (Boone Co). The Delaware County townships were attributed as either Muncie City or Yorktown Town and had associated incorporated area boundaries overlapping the civil township boundary. Boone County had townships attributed as Zionsville City and Whitestown Town and had associated incorporated are boundaries overlapping the real civil township boundary. Civil township boundaries from the 2023 Data Harvest were used when possible to correct geometry, and the neighboring census township boundaries to maintain topology when needed. Eagle and Union townships do not have a populated GEOID since the corrected boundary does not correspond to a census MCD geography to avoid incorrect joins to census tabular data by end users.民事镇区（Civil townships）是一类地方政府单位，通常隶属于县（County）。在美国印第安纳州，每个镇区均设有一名民选的镇区行政委员。美国人口普查局（US Census Bureau）在本数据集的源数据中，将民事镇区主要归类为次级民政区划（Minor Civil Divisions，MCDs）。根据美国人口普查局的官方定义，次级民政区划是美国诸多州内县的核心政府或行政区划单元。 本数据集主要收录次级民政区划的边界信息，同时包含部分经修正的镇区边界（详细说明见下文）。2024年1月3日，IGIO工作人员完成了6个镇区的边界及/或属性信息更新，涉及的镇区分别为：特拉华县（Delaware Co）的中心镇区、芒特普莱森特镇区；布恩县（Boone Co）的伊格尔镇区、佩里镇区、尤宁镇区以及沃思镇区。 其中，特拉华县的镇区属性被标注为曼西市或约克敦镇，其关联的建制区域边界与民事镇区边界存在重叠；布恩县的镇区属性被标注为曾斯维尔市或怀特斯特敦镇，其关联的建制区域边界同样与实际民事镇区边界存在重叠。 在数据处理过程中，本数据集优先采用2023年数据采集项目中的民事镇区边界以修正几何信息，必要时则采用相邻普查镇区边界以维持拓扑一致性。伊格尔镇区与尤宁镇区未配置有效的地理标识符（GEOID），原因是修正后的边界未对应至普查次级民政区划地理单元，以此避免终端用户错误地将其与普查表格数据进行关联匹配。