census geography (legal entities) nation state counties minor civil divisions – boroughs,...
TRANSCRIPT
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Census Geography (Legal Entities)
• Nation• State• Counties• Minor Civil Divisions– Boroughs, Townships
• Place• Towns, Cities, Villages
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Census Geography (Stat. Entities)
• Blocks– Small areas bounded by physical features
• Block Groups– Collections of Blocks– A Census Tract Subdivision
• Census Tracts– As Homogeneous As Possible– Roughly 1,000 – 8,000 persons
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Census Geography (Stat. Entities)
• Census-Designated Places• Urbanized Areas– At least 50,000 population– Density of 1,000/sq.mi. at core– Density of >= 500/sq.mi. at periphery of core
• Urban Cluster– Consists of the density requirement of UA
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Census Geography (Stat. Entities)
• Metropolitan Areas– Large population nucleus– High degree of integration at nucleus• Social• Economic• Functional
– Boundary theoretically defined by spatial extent of integration
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Census Geography (Stat. Entities)
• MA– Freestanding MSA not closely aligned with
another MA
• PMSA– An MA with > 1,000,000 population that is
subdivided into contiguous MAs
• CMSA– A specific collection of PMSAs
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Census Sampling Patterns
• Short Form– As near “census” as possible– SF1, SF2 & Redistricting Summary File
• Long Form– 1 in 6 receive survey– Constitutes the 1% and 5% samples– SF3, SF4 & PUMS (among others)
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Short Form Census
• Only Seven Questions
• Fulfills the Constitutional Obligation– Decennial Enumeration of Population– Congressional Representation
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Short Form Questions
• Name• Sex• Age• Relationship• Hispanic Origin• Race• Tenure (owner or renter)
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Demographic Oddities
• Shifting definition of “hispanic” over time
• 2000 Census first to consider multi-racial categories
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Long Form Questions
• Moving away from original intent of decennial census
• Questions much more probing and sensitive• Purpose?
• Qualifying for federal funding & grant programs
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Data Files Consist of Tables
• Population (P)• Housing (H)• Population at Census Tract level (PCT)
• Tables are indicated by prefix and a number
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Example
• P12– Sex by Age (5-year groupings)