Ungeneralised Settlements – National Statistical Boundaries – 2015

<div style='text-align:left;'><p><span style='font-size:12pt;'>In order to distinguish between the urban and rural population for census analysis, the boundaries of distinct settlements need to be defined. This requires the creation of suburbs and extensions to existing cities and legal towns, as well as delineating boundaries for settlements which are not legally defined (called Census towns). From 1971 to 2006, Census towns were defined as a cluster of fifty or more occupied dwellings where, within a radius of 800 metres there was a nucleus of thirty occupied dwellings (on both sides of a road, or twenty on one side of a road), along with a clearly defined urban centre e.g. a shop, a school, a place of worship or a community centre. Census town boundaries where extended over time where there was an occupied dwelling within 200 metres of the existing boundary. To avoid the agglomeration of adjacent towns caused by the inclusion of low density one off dwellings on the approach routes to towns, the 2011 criteria were tightened, in line with UN criteria. In Census 2011 a new Census town was defined as being a cluster with a minimum of 50 occupied dwellings, with a maximum distance between any dwelling and the building closest to it of 100 metres, and where there was evidence of an urban centre (shop, school etc). The proximity criteria for extending existing 2006 Census town boundaries was also amended to include all occupied dwellings within 100 metres of an existing building. Other information based on </span><span style='font-size:16px;'>Tailte Éireann</span><span style='font-size:12pt;'> mapping and orthogonal photography was taken into account when extending boundaries. Boundary extensions were generally made to include the land parcel on which a dwelling was built or using other physical features such as roads, paths etc. Extensions to the environs and suburbs of legal towns and cities were also constructed using the 100 metre proximity rule applied to Census towns. For census reports, urban settlements are towns with a population of 1,500 or more, while settlements with a population of less than 1,500 are classified as rural.</span></p><p><span style='font-size:16px;'>This dataset is provided by Tailte Éireann </span><br /></p></div>为开展人口普查分析中的城乡人口区分工作，需明确各类定居点的边界范围，这包括为现有城市及法定城镇划定郊区与延伸区域，同时为未获得法定身份的定居点（即普查城镇（Census town））划定边界。1971年至2006年间，普查城镇的定义为：拥有50处及以上已占用住宅的聚居区，且在800米半径范围内存在由30处已占用住宅构成的核心区域（该核心可位于道路两侧，或单侧道路旁分布20处），同时需具备明确的城市中心要素，例如商店、学校、宗教礼拜场所或社区中心。随着时间推移，若现有普查城镇边界200米范围内出现已占用住宅，其边界将予以延伸。为避免因城镇进出路线上的低密度零散住宅导致相邻城镇连片，2011年的普查城镇划定标准参照联合国准则进行了收紧。2011年人口普查中，新普查城镇的定义调整为：拥有至少50处已占用住宅的聚居区，任意住宅与其最近建筑的最大间距不超过100米，且存在城市中心要素（如商店、学校等）。同时，针对2006年普查城镇边界的延伸邻近标准也进行了修订，将现有建筑100米范围内的所有已占用住宅纳入延伸范围。在边界延伸工作中，还需参考Tailte Éireann的测绘数据与正射摄影资料。边界延伸通常会覆盖住宅所在的地块，或依托道路、小径等物理特征进行划定。针对法定城镇及城市的周边与郊区的延伸工作，同样采用适用于普查城镇的100米邻近规则。在人口普查报告中，人口规模达1500人及以上的定居点被归类为城镇，人口不足1500人的定居点则归类为农村。 本数据集由Tailte Éireann提供。