Census Tracts Updated (2010)

This polygon shapefile shows census tracts in the SPC region from the 2010 census. Census tracts are defined as " small, relatively permanent statistical subdivisions of a county. " The minimum population of a census tract is 1,200 people, and the maximum is 8,000 people.本多边形形状文件（polygon shapefile）展示了SPC区域2010年人口普查的普查区域（census tracts）。普查区域被定义为“县级范围内规模较小、相对稳定的统计分区”，单个人口普查区域的人口下限为1200人，上限为8000人。