State of Michigan2000 Block Groups from the Michigan Geographic Framework (MGF) base map. Block groups (BG's) are combinations of census blocks within a census tract or BNA that share the same first digit in their identifying numbers. For example, BG 3 within a particular census tract comprises all blocks numbered between 301 and 399. A census tract or BNA contains a maximum of nine BGs. BG00 consists of the 6 digit tract number followed by the 1 digit block group number. More MetadataArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/fff0e70373754504b8e74b178e9b5b35_12engState of Michigan Open Data PortalPublic2000 Block Groups (v17a) [Michigan]Web servicesMichigan2000