1. John M. Abowd and Lars Vilhuber February 16, 2011
INFO 4470/ILRLE Register-based statistics by example: OnTheMap and travel-to-work
John M. Abowd and Lars Vilhuber February 16, 2011

2. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
Outline
Sources of Origin-Destination data
CTPP and mapping
OnTheMap and mapping
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

3. Department of Transportion
“The Census Transportation Planning Package (CTPP) is a set of special tabulations from decennial census demographic surveys designed for transportation planners.”
“It is the only Census product that summarizes data by place of work and tabulates the flow of workers between home and work.”
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

4. Department of Transportation
“CTPP2000 is a special tabulation of responses from households completing the 2000 Census long form.
Part 1 contains residence end data summarizing worker and household characteristics [origin]
Part 2 contains place of work data summarizing worker characteristics [destination]
Part 3 contains journey-to-work flow data. [link]”
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

5. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
Sources
Census 2000 Long Form Questionnaire
ACS questionnaire
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

6. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

7. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

8. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

9. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
CTPP
Census Transportation Planning Package
Tabulations of Census 2000
Time to work
Distance to work
O-D matrix
Could you tabulate this yourself?
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

10. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
CTPP Mapping system
Download data in pairs
Origin-destination pairs
Additional data for each pair
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

11. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
Updates to CTPP
CTPP based on Census 2000 (now called CTPP2000)
ACS has similar questions
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

12. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

13. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

14. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

15. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
CTPP 200x data
Details will be based on merged ACS
Geography limited to areas with 20,000 or more population
Typical tract: 4,000
For more geographic detail, ACS
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

16. Department of Transportion
“The Census Transportation Planning Package (CTPP) is a set of special tabulations from decennial census demographic surveys designed for transportation planners.”
“It is the only Census product that summarizes data by place of work and tabulates the flow of workers between home and work.”
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

17. Department of Transportion
“The Census Transportation Planning Package (CTPP) is a set of special tabulations from decennial census demographic surveys designed for transportation planners.”
“It is the only Census product thatWRONG summarizes data by place of work and tabulates the flow of workers between home and work.”
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

18. Register-based statistics
Wide-spread (universal?) coverage
Used for administrative purposes
Can you think of any data that has your work address?
Can you think of any data that has your home address?
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

19. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

20. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

21. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

22. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

23. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

24. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
Sources
IRS Form
IRS Form W2
State administrative reports, e.g. California
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

25. Combining adminstrative sources
LEHD program combines
UI wage records (filed as part of UI administration) [link]
UI employer records, with work address [destination]
Tax and other records on persons (among other sources, Form 1040) [origin]
IRS Statitics of Income combines [link]
Form 1040 from different years [origin/destination]
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

26. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved

27. © John M. Abowd and Lars Vilhuber 2011, all rights reserved
OnTheMap
2/1/2011
© John M. Abowd and Lars Vilhuber 2011, all rights reserved