Description: Layerfile Name: \\olympus\gisdata\clarkgis\avdata\layers\clarkview\boundaries\census\Census Block Groups - 2020.lyr
US Census block groups in Clark County. These are areas that summarize population statistics and are usually comprised of several Census blocks. A block group is also a sub-unit of the larger Census tract. Block groups generally contain between 600 and 3,000 people.