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Arkansas Transportation Planning Conference , Little Rock, AR (May 18 , 2011)

Decennial Census, The American Community Survey and Census Transportation Planning Products Program Penelope Weinberger CTPP Program Manager - AASHTO. Arkansas Transportation Planning Conference , Little Rock, AR (May 18 , 2011). Today. Decennial Census

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Arkansas Transportation Planning Conference , Little Rock, AR (May 18 , 2011)

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  1. Decennial Census, The American Community Survey and Census Transportation Planning Products ProgramPenelope Weinberger CTPP Program Manager - AASHTO Arkansas Transportation Planning Conference, Little Rock, AR (May 18, 2011)

  2. Today • Decennial Census • What is it, what’s in it, when will it be available • American Community Survey • Multi Year Estimates • PUMS • CTPP • The program • The current data release • How to access it

  3. The Decennial Census • Counts every resident in the United States. • Mandated by Article I, Section 2 of the Constitution • Every 10 years. • Determines the number of seats in the U.S. House of Representatives (Apportionment) • Used to distribute billions in federal funds to local communities.

  4. The 2010 Census represented the most massive participation movement ever witnessed in our country. • Approximately 74 % of the households returned their census forms by mail; the remaining households were counted by census workers walking neighborhoods throughout the United States.

  5. 10 Questions Asked • How many people in the house? • Type of house, apt., mobile. • Name and telephone number • Sex • Age • Race • Hispanic, Latino, or Spanish Origin

  6. Released Dec 2011

  7. Apportionment The process of dividing the seats in the House of Representatives among the 50 states based on the population figures collected during the decennial census. The number of seats in the House has grown with the country. • 1787 = 65 representative seats • 1790 = 105 representative seats • 1913 = 435 representative seats • 710,767 people per representative

  8. 2010 Census Redistricting Data FEB 2011 – APR 2011: • Feb 2011 – Mar 2011: States • State population counts for race and Hispanic or Latino categories • State housing unit counts by occupancy status (occupied units, vacant units) • April 2011: National Update

  9. JUN 2011 – AUG 2013:Summary File 1 (SF1) • JUN 2011 – AUG 2011: States • Population counts for 63 race categories and American Indian and Alaska Native tribes • Hispanic or Latino Origin • Selected population and housing characteristics • NOV 2011: National Update

  10. JUN 2011 – AUG 2013:Summary File 1 (SF1) (Cont’d) • OCT 2012: Urban/Rural Update • Urban and rural population and housing unit counts • Characteristics for urbanized areas and urban clusters

  11. Urban and Rural Classification • Classifies as "urban" all territory, population, and housing units located within an urbanized area (UA) or an urban cluster (UC). • Core census block groups or blocks that have a population density of at least 1,000 people per square mile, and • Surrounding census blocks that have an overall density of at least 500 people per square mile

  12. Defining Metropolitan and Micropolitan Statistical Areas • Metropolitan Statistical Areas: • at least one urbanized area of 50,000 or more inhabitants • Micropolitan Statistical Areas: • at least one urban cluster of at least 10,000 but less than 50,000 population

  13. Defining Core-Based Statistical Areas • CBSAs became effective in 2000 and refer to metropolitan and micropolitan statistical areas • As of December 2009, there were 366 metropolitan statistical areas and 576 micropolitan statistical areas in the United States • JUL 2013 – AUG 2013: Redefined Core-Based Statistical Areas Update • Counts and characteristics for redefined CBSAs as defined by OMB following the 2010 Census

  14. Defining Core-Based Statistical Areas - 2010 Standards • Each CBSA must contain at least one urban area of 10,000 or more • Central County • At least 50 percent of the population residing within urban areas of 10,000 or more, or • at least 5,000 population located in a single urban area of at least 10,000 population. • Outlying Counties • Included, if they meet specified requirements of commuting to or from the central counties

  15. DEC 2011 – JAN 2013:Summary File 2 (SF 2) • DEC 2011 – APR 2012: States • Iterated population and housing characteristics for many detailed race and ethnic categories • MAY 2012: National Update

  16. DEC 2011 – JAN 2013:Summary File 2 (SF 2) • JAN 2013: Urban/Rural Update • Urban and rural population and housing unit counts • Characteristics for urbanized areas and urban clusters

  17. Additional Releases • MAY 2012 – DEC 2012:Summary Population and Housing Characteristics Report Series • APR 2013 – SEP 2013:Population and Housing Unit Counts Report Series

  18. Additional Releases • JAN 2013:Retabulation of SF1 for newly redistricted Congressional District Summary File (113th Congress) • JUN 2013:Retabulation of SF1 for State Legislative District Summary FileLegislative District Geographic Supplement

  19. Additional Releases • DEC 2012:American Indian and Alaska Native Summary File • APR 2013:Characteristics of American Indians and Alaska Natives by Tribe Report

  20. Additional Releases • MAR 2011 – FEB 2012:2010 Census Briefs • JUN 2011 - JUN 2013:2010 Census Special Reports • To be determined:Public Use Microdata Sample (PUMS) Files (not from Decennial data)

  21. Quick Overview of ACS • Replaced LF • Period Estimate, not Point in Time • ~ 1 in 9 sample for 5-year data • Household based • Collected monthly and accumulated • One year • Data released for areas 65,000 or greater • Three Year • Data released for areas 20,000 or greater • Five Year • Data released for All Geographies • Subject to Disclosure Rules, of course

  22. ACS 1, 3 and 5-year estimates • ACS collected since 2001 • 2007 – big year… • First ACS 3-year estimates based on data for 2005 – 2007 • First ACS 5-year estimates based on data collected in 2005 – 2009 were released in December 2010

  23. ACS Data Dissemination Plan • Estimates are released annually and disseminated through the American FactFinder • Census block group data released only in a summary file format and only for 5-year estimates, accessible from the American FactFinder download center • Over time, Census expects to change the ACS data products as they receive input from users and evaluate usage

  24. Detailed tables Data profiles Subject tables Narrative profiles Geographic comparison tables Thematic maps PUMS files Summary files ACS 5-year Data Products Included in 2005-2009 Release Margins of Error published with all ACS Estimates

  25. Commuting Data • Commuting data and other detailed demographic, social, economic, and housing data is now collected using the ACS • ACS questions related to commuting are the same as those on the 2000 Census Long Form

  26. Commuting Questions on the ACS • Means of transportation • Occupants per Vehicle • Time leaving home for work • Travel time to work • Place of work • Vehicles per household

  27. Geographic Summary Levels for ACS Releases

  28. Census Geographic ConceptsLegal/Administrative and Statistical Areas

  29. Geography http://www.census.gov/geo/www/geodiagram.pdf

  30. ACS estimatesExamples of Geographic Summary Levels

  31. What is the PUMS file? A sample of population and housing unit records from the American Community Survey Allows users to create custom tables that are not available through pretabulated ACS products Most recent PUMS data available: -2009 1-year ACS, and 2007-2009 3-year ACS, 2005 - 2009 5-year ACS based PUMS

  32. Geographic Areas in the ACS PUMS Nation All states, D.C., Puerto Rico Public Use Microdata Areas (PUMAs)

  33. What are PUMAs? • Lowest level of geography is the PUMA, even for 5-YR • Predefined areas with 100,000+ residents • Combinations of adjacent counties and census tracts within states • PUMA boundaries match those used in Census 2000

  34. Chicago Why are PUMAs Important? NE Illinois (2008 pop estimate) Normal ACS Annual Data • Annual Data • 65K+ • Note the areas in gray • We call this Swiss Cheese

  35. Why are PUMAs Important? NE Illinois (PUMAs) PUMAs are a Tabulation Area for Annual ACS Data • Represent 100K • Complete Coverage • Smaller than Counties • NO Swiss Cheese

  36. How many PUMAs? City of Chicago 2000 PUMAs Why are PUMAs Important? - Defines areas for analysis - Tabulation Area for ACS Who Defines Them? - The Community - Led by State Data Center When are They Defined? - Summer 2011 -Criteria out Spring 2010??? 2,896,016 (2000 Pop) http://www.census.gov/geo/www/maps/puma5pct.htm

  37. Find PUMS Documentation Available at: http://www.census.gov/acs/www/data_documentation/pums_documentation/

  38. New ACS Content and Special Topics

  39. ACS data on disability • Additional Questions: Health Insurance and Field of Degree • Disability data are not available from the 2005-2009 American Community Survey data set due to changes in the disability questions in 2008 • The 2009 ACS disability questions are different from the Census 2000 disability questions, thus comparisons cannot be made.

  40. ACS Subcountypopulation controls • ACS estimates of the total population are now controlled at the subcounty level. • Estimates for Incorporated places and minor civil divisions (MCD) are now adjusted closer to Population Estimate Program (PEP) estimates • For more information on ACS subcounty controls: <http://www.census.gov/acs/www/data_documentation/documentation_main/>

  41. Additional ACS-Based Commuting Products • 2009 Public Transportation Brief (Released Oct. 2010) • http://www.census.gov/prod/2010pubs/acsbr09-5.pdf • 2009 ACS Commuting Report (Spring 2011)

  42. Get ACS Data at: • factfinder.census.gov • Get detailed documentation at: • http://www.census.gov/acs/www/data_documentation/2009_5yr_data/

  43. What is the CTPP Program? The CTPP is an umbrella program of data products, custom tabulations, training, technical assistance, and research for the transportation community.  CTPP uses American Community Survey (ACS) data from U.S. Census Bureau.   WARNING! Decennial Census has no Long Form – There is No JTW data in Decennial Census!

  44. Historic Background 1960 Census “long form” – journey to work question added OMB required-Metro Areas Coded to City or County No Special Tabulations

  45. Historic background

  46. CTPP Program Activities and Costs 5-Year Program: 2008 ~ 2012

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