Block Group

{
  "id": "MLC-T-ECS-000172",
  "term": "Block Group",
  "field": "Economic statistics",
  "definition": "A statistical subdivision of a census tract, generally defined to contain between 600 and 3,000 people and 240 and 1,200 housing units, and the smallest geographic unit for which the Census Bureau tabulates sample data. A sub-division of a census tract (or, prior to 2000, a block numbering area), a block group is a cluster of blocks having the same first digit of their four-digit identifying number within a census tract.",
  "abbreviation": "BG",
  "see_also": [
    "Census block",
    "Census geography",
    "Census tract",
    "Sample data"
  ],
  "references": [
    "U.S. Census Bureau Glossary"
  ],
  "url": "https://mlchart.com/terminology/economic-statistics/block-group/"
}