Massachusetts Municipalities (Singlepart) (Hosted Feature Layer)

This layer is the most accurate representation of Massachusetts' municipal (city and town) boundaries; this representation is based on the legislatively approved record of municipal boundaries. This political boundary datalayer has been created from latitude and longitude coordinates found in the 68-volume Harbor and Lands Commission Town Boundary Atlas. This Atlas series, and updates since it was published, describes the legal boundary for each of the 351 municipalities in Massachusetts. These coordinates were recorded from surveys of the location of each boundary marker around the periphery of each community. Each survey was tied into higher order monumented survey control points. The Atlases also include detailed descriptions of each community's boundary and location maps for each of the original boundary marker locations. The original surveys were conducted in the 1890s. The Atlas series was published in the early 1900s and has since been updated by the Survey Section of the Massachusetts Highway Department (now The Massachusetts Department of Transportation (MassDOT) - Highway Division) with changes as they are approved by the legislature. This hosted feature layer, with "Enable Sync" set, contains singlepart polygons representing inland and offshore areas, with one feature for every land area (each island has its own record/feature), and the outlines as a line layer. For layers with multipart polygons (one record for each city/town), see Massachusetts Municipalities Massachusetts Municipalities with Generalized Coast View full metadata

本图层是马萨诸塞州（Massachusetts）市政（市县）边界的最精准呈现，其制作依据为经立法批准的市政边界官方记录。该政治边界要素图层的数据源自68卷《港口与土地委员会城镇边界图集》（Harbor and Lands Commission Town Boundary Atlas）中的经纬度坐标。这套图集及其出版后的历次更新，详细记载了马萨诸塞州全部351个市政辖区的法定边界。这些坐标来自对每个社区周边边界标志物的实地测量，每项测量均接入高阶已标记测量控制点。该图集还包含各社区边界的详细说明，以及所有原始边界标志物位置的定位地图。原始测量工作开展于19世纪90年代，该图集系列于20世纪初正式出版，后续由马萨诸塞州公路局测量科（现马萨诸塞州交通部（MassDOT）公路分局）根据立法批准的变更内容进行更新维护。本托管要素图层已启用"Enable Sync"功能，包含代表内陆与近海区域的单部分多边形，每个陆地区域（含每个独立岛屿）均对应一条要素记录，同时附带作为线图层的边界轮廓。若需使用多部分多边形（每个市县对应一条记录）的图层，请参阅《马萨诸塞州市政辖区》；查看完整元数据请访问带通用化海岸视图的马萨诸塞州市政辖区页面。