Census Block Groups (2020)

This polygon shapefile shows block groups in the SPC region for the 2010 census. Census block groups are one step above census blocks and are the smallest unit at which the Census Bureau publishes sample data. Block groups typically range from 600 to 3,000 people.本多边形形状文件（Shapefile）展示了SPC区域2010年人口普查的普查区块组（Census Block Groups）。普查区块组的层级高于普查区块，是美国人口普查局发布抽样数据的最小统计单元。其人口规模通常介于600至3000人之间。