{
  "_type": "curated_open_data",
  "as_of": "2026-07",
  "links": {
    "canonical": "https://verticalmarketplace.ai",
    "docs_for_llms": "https://verticalmarketplace.ai/llms.txt",
    "sell_your_own": "https://verticalmarketplace.ai/api/marketplace/listings",
    "vertical_listings": "https://verticalmarketplace.ai/api/marketplace/listings?vertical=demographics"
  },
  "records": [
    {
      "term": "Decennial census",
      "category": "Program",
      "reference": "U.S. Constitution, Article I, Section 2",
      "definition": "The count of every U.S. resident conducted every ten years"
    },
    {
      "term": "Apportionment",
      "category": "Concept",
      "reference": "U.S. Census Bureau",
      "definition": "Distribution of the 435 U.S. House seats among the states based on population"
    },
    {
      "term": "Redistricting",
      "category": "Concept",
      "reference": "U.S. Census Bureau",
      "definition": "Redrawing legislative district boundaries after each census"
    },
    {
      "term": "American Community Survey (ACS)",
      "category": "Survey",
      "reference": "U.S. Census Bureau",
      "definition": "Ongoing survey providing detailed social, economic, and housing estimates"
    },
    {
      "term": "Census tract",
      "category": "Geography",
      "reference": "U.S. Census Bureau",
      "definition": "Small, stable geographic area of roughly 4,000 residents used for tabulation"
    },
    {
      "term": "Block group",
      "category": "Geography",
      "reference": "U.S. Census Bureau",
      "definition": "Cluster of census blocks; the smallest area for which sample data are published"
    },
    {
      "term": "Metropolitan Statistical Area (MSA)",
      "category": "Geography",
      "reference": "OMB",
      "definition": "County-based region with a core urban area of 50,000 or more people"
    },
    {
      "term": "Core-Based Statistical Area (CBSA)",
      "category": "Geography",
      "reference": "OMB",
      "definition": "Collective term for metropolitan and micropolitan statistical areas"
    },
    {
      "term": "FIPS code",
      "category": "Identifier",
      "reference": "U.S. Census Bureau",
      "definition": "Federal Information Processing Standard code identifying states and counties"
    },
    {
      "term": "Household vs. family",
      "category": "Definition",
      "reference": "U.S. Census Bureau",
      "definition": "A household is all occupants of a housing unit; a family is related occupants"
    },
    {
      "term": "Group quarters",
      "category": "Definition",
      "reference": "U.S. Census Bureau",
      "definition": "Facilities such as dorms and nursing homes where people live in a group setting"
    },
    {
      "term": "Poverty threshold",
      "category": "Metric",
      "reference": "U.S. Census Bureau",
      "definition": "Census income cutoff used for statistics, distinct from HHS poverty guidelines"
    },
    {
      "term": "Race and Hispanic origin standards",
      "category": "Classification",
      "reference": "OMB Statistical Policy Directive 15",
      "definition": "Federal categories governing collection of race and ethnicity data"
    },
    {
      "term": "Margin of error",
      "category": "Methodology",
      "reference": "U.S. Census Bureau (ACS)",
      "definition": "Range expressing sampling uncertainty around a survey estimate"
    }
  ],
  "sources": [
    {
      "url": "https://www.census.gov/glossary",
      "name": "U.S. Census Bureau Glossary"
    },
    {
      "url": "https://www.whitehouse.gov/omb/information-regulatory-affairs/statistical-programs-standards",
      "name": "OMB Statistical Programs and Standards"
    }
  ],
  "category": "glossary",
  "vertical": "demographics",
  "data_note": "All records are public-domain facts compiled from the cited sources as of the asOf date. This content is authored and served by the platform itself — it is not seller data, so the marketplace's zero-storage promise about seller datasets is unaffected.",
  "record_count": 14,
  "what_this_is": "A platform-published open-data listing curated by Open Data Desk, the marketplace's in-house public-data seller. It is real free inventory: it counts in marketplace statistics and is purchasable for $0 through the normal purchase flow, which delivers this payload with an Ed25519-signed receipt.",
  "record_schema": {
    "term": "The census or demographic term or code",
    "category": "Topical grouping",
    "reference": "Authoritative source that defines the term",
    "definition": "Plain-language meaning"
  },
  "buyer_use_cases": [
    "Correctly join datasets on census geography and FIPS codes",
    "Interpret ACS estimates and their margins of error",
    "Onboard analysts to census classification standards"
  ]
}