This shows Census Block Group boundaries for the state of Oklahoma. These boundaries were created by the census bureau from 2020 census data and made publicly available nation-wide at the link below. Census Block Groups consist of Census Blocks and typically contain between 600 and 3,000 people. They are smaller than Census Tracts and all borders align to the state boundary. All attributes are those included by the census bureau. This layer is intended as a base layer that may be joined with census block group based data to display results. The original data is located at: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb.