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Unlocking the Significance of Geographic Entities and Concepts in U.S. Census Data

Explore the importance of geography in analyzing U.S. Census data, including population statistics, urbanization trends, geographic classification hierarchies, and core-based statistical areas. Discover how census designations influence data presentation and interpretation.

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Unlocking the Significance of Geographic Entities and Concepts in U.S. Census Data

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  1. Census Bureau Geographic Entities and Concepts

  2. Why is geography important? • U.S. population, Census 2000 • Maryland population, Census 2000 • Prince George’s County, MD population • Washington, DC metro area • Howard County, MD residents who work in Prince George’s County • Young, single, college educated who moved to DC MSA 1995-2000 • Guerra, TX CDP population • U.S. percent urban, Census 2000 • 281,421,906 • 5,296,486 • 729,628 • 4,796,183 • 14,538 • 90,851 • 8 • 79.0

  3. Miami and Vicinity, 1990 and 2000 1990 Census definition West Palm Beach Census 2000 definition Fort Lauderdale Miami-Hialeah Miami Total pop: 3,947,642 Pop: 4,919,036 Miami Pop: 3,952,501 Census 2000 criteria applied to 1990 data

  4. Pink- Block Groups Green – TAZs Potential Disclosure Concerns: Traffic Analysis Zones, downtown San Francisco

  5. Legal/Administrative Areas Examples: States Counties Minor civil divisions Incorporated places Congressional districts Legislative areas School districts Statistical Areas Examples: Census county divisions Census designated places Census tracts Metropolitan and micropolitan statistical areas Urban areas Public Use Microdata Areas Traffic Analysis Zones Census Geographic Concepts

  6. Hierarchy of Census Geographic Entities

  7. Blocks, Block Groups, and Census Tracts

  8. County Subdivisions

  9. Places • Incorporated Places • Legally bounded entity • Referred to as cities, boroughs, towns, or villages, depending on the state • Census Designated Places (CDPs) • Statistical entity • Created to present census data for an area with a concentration of population, housing, and commercial structures that is identifiable by name, but not within an incorporated place • Example: Columbia, MD; Paradise, NV

  10. Maryland Places

  11. Paradise, NV CDP Las Vegas Paradise CDP CDP capturing an Economic Center

  12. Vado CDP & La Mesa, Doña Ana County, NM La Mesa

  13. Urban Area Classification: Census 2000 • Urbanized Areas of 50,000 or more people. • Urban Clusters of 2,500 up to 50,000 people. • Both defined based on population density at the census block and block group levels.

  14. Urbanized Areas and Urban Clusters

  15. Core Based Statistical Area Classification • Core Based Statistical Area (CBSA) – refers to both metropolitan and micropolitan statistical areas; county-based areas, defined based on commuting patterns • Metropolitan Statistical Area - must have at least one UA • Micropolitan Statistical Area -must have at least one UC of at least 10,000 • Metropolitan Division – subdivision of a metropolitan statistical area • Combined Statistical Area – represents a grouping of adjacent CBSAs. • New England City and Town Area – a city- and town-based equivalent to the county-based CBSAs.

  16. Metropolitan Areas, 1999

  17. Metropolitan and Micropolitan Statistical Areas, 2003

  18. Questions? Geographic area concepts, criteria, codes, and attributes: Geographic Standards and Criteria Branch: x3-3056 Geographic products: Geographic Products Management Branch: x3-1128

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