ctpp-news April 2003

ctpp-news@mailman.chrispy.net

7 participants
15 discussions

Calculating commute flow for "Core Based Statistical Areas"

by Elaine Murakami

This information is provided by Todd Gardner Population Distribution Branch, U.S. Census Bureau: The standards for defining CBSAs are given in the Dec. 27, 2000, Federal Register Notice, available on the Census Bureau's website at http://www.census.gov/population/www/estimates/masrp.html. To determine if a county qualifies as an outlying county in a CBSA the following test is employed: Section 3. Outlying Counties A county qualifies as an outlying county of a CBSA if it meets the following commuting requirements: (a) at least 25 percent of the employed residents of the county work in the central county or counties of the CBSA; or (b) at least 25 percent of the employment in the county is accounted for by workers who reside in the central county or counties of the CBSA. A county may appear in only one CBSA. If a county qualifies as a central county of one CBSA and as outlying in another, it falls within the CBSA in which it is a central county. A county that qualifies as outlying to multiple CBSAs falls within the CBSA with which it has the strongest commuting tie, as measured by either (a) or (b) above. The counties included in a CBSA must be contiguous; if a county is not contiguous with other counties in the CBSA, it will not fall within the CBSA. The numbers used in this test come from the 2000 County-to-County Worker Flow Files, available on the Census Bureau's website at http://www.census.gov/population/www/cen2000/commuting.html. The number of employed residents is calculated by adding up all counts of individuals in the 2000 County-to-County Worker Flow Files where the county in question is listed as the county of residence. Similarly, county employment is calculated by adding up all counts in the 2000 County-to-County Worker Flow Files where the county in question is listed as the place of work. If you have any further questions you can contact me at 301-763-2459. --Todd Gardner Population Distribution Branch

21 years, 3 months

CTPP is delayed and we have no expected date of delivery

by Murakami, Elaine

Just when the Census Bureau was ready to issue CTPP Part 1, everything has ground to a halt. On April 18, 2003, the Census Bureau advised the CTPP Working Group that 10 tables in CTPP Part 1 could not be released. These 10 tables were in addition to the 3 tables that were already slated to be eliminated, given earlier stated concerns with the quality of Group Quarters data from the decennial census. The logic that would eliminate these 10 tables would ALSO eliminate two very critical tables in Part 3 (flow from home to work), these are: 3-2. Number of Vehicles in Household (4) by Means of Transportation to Work (8), and 3-7. Household Income (5) by Means of Transportation to Work (5). It is not clear what logic the Census Bureau would apply to Part 2 and whether any of those Tables would also be eliminated. AASHTO is discussing their concerns with the Census Bureau, and we hope to have a resolution soon. However, we cannot even estimate when the CTPP Part 1 will now be released. Your truly, with major disappointment, and discourgagement, Elaine Murakami Federal Highway Administration Office of Planning 206-220-4460

21 years, 6 months

Re: CTPP Part 1?

by Elizabeth Hartmann

Has there been a schedule change for release of the CTPP (beyond county-to-county flows)? We had been expecting the data in April, and the calendar says tomorrow is May! There have been anouncements on the listserve for initial release of PUMS-1 percent and SF-4, but no correspondance on the queue for the finer-detailed CTPP Part 1. Does anyone know where Minnesota might be on the distribution list? We'd heard about some issues/delays, but are unsure about the details. Thanks very much! Liz Hartmann Research Analysis Specialist MnDot Office of Investment Management

21 years, 6 months

Summary File #4 Data

by Chuck Purvis

TO: CTPP-News RE: Summary File #4 Summary File #4 data is now being released, and is available on American FactFinder. (http://factfinder.census.gov/) SF4 data for five states was released today (4/29/03): Delaware, Hawaii, New Jersey, Vermont and Wisconsin. Data is being released on a flow basis. The main SF4 news release page is here: http://www.census.gov/Press-Release/www/2003/SF4.html Full documentation (775 pages in PDF format) for Summary File #4 is available here: http://www.census.gov/prod/cen2000/doc/sf4.pdf The Summary File #4 is based on long form, sample data and is provided down to the census tract level. This product is similar to Summary File #2 (SF #2 is based on short form, 100% data; SF #4 is based on long form, sample data). Similar to SF #2, the minimum population threshold for SF #4 is 100 persons and 50 unweighted cases. This means that there may be no data reported for very small population groups at very small (tract) or even moderate size (place, county) geographic levels. All tables are iterated for total population and 335 race/hispanic/ancestry groups: 132 race categories; 78 American Indian / Alaskan Native groups; 39 Hispanic/Latino groups; and 86 ancestries (e.g., Irish, Greek, Russian, etc.) There are 323 total tables in SF #4: 213 "PCT" tables (Population, Census Tract), and 110 "HCT" tables (Housing, Census Tract). The commute-related tables in SF #4 are PCT55 through PCT60. The household vehicle tables in SF #4 are HCT32 through HCT34. The Summary File #4 can be useful to researchers and planners who are interested in the socio-economic characteristics of persons in their region or state by race/hispanic/ancestry. Some examples of analyses: 1. Group quarters population (institutional, non-institutional) by age group by detailed race/hispanic/ancestry group (PCT9) 2. Linguistic isolation by detailed race/hispanic/ancestry groups (PCT41) 3. Migration Status (Where Lived in 1995) by detailed race/hispanic/ancestry groups (PCT49,PCT50) 4. Means of Transportation to Work by detailed race/hispanic/ancestry groups (PCT51) 5. Average Commute Time by detailed race/hispanic/ancestry groups (PCT58) 6. Disability Status by sex by age by detailed race/hispanic/ancestry groups (PCT69) 7. Detailed Industry of Employment by sex by detailed race/hispanic/ancestry groups (PCT85) 8. Detailed Occupation of Employee by sex by detailed race/hispanic/ancestry group (PCT86) 9. Household Income Characteristics by detailed race/hispanic/ancestry group (PCT88-PCT90) 10. Vehicles per Household by detailed race/hispanic/ancestry group (HCT32, HCT34) 11. Households by Tenure by Household Income by detailed race/hispanic/ancestry group (HCT35) Good luck to those working with this new data! Chuck Purvis, MTC ************************************************************** Charles L. Purvis, AICP Principal Transportation Planner/Analyst Metropolitan Transportation Commission 101 Eighth Street Oakland, CA 94607-4700 (510) 464-7731 (office) (510) 464-7848 (fax) www: http://www.mtc.ca.gov/ Census WWW: http://www.bayareacensus.ca.gov/ **************************************************************

21 years, 6 months

PUMS 1-Percent Schedule Updates

by Chuck Purvis

TO: CTPP-News The Census Bureau's release schedule for the 1-percent Public Use Microdata Sample (PUMS) has been updated: http://www.census.gov/Press-Release/www/2003/PUMS.html Data for five states was released last Wednesday: New York, Florida, Rhode Island, Vermont and Wyoming. Data for New Jersey is tentatively scheduled for release tomorrow, April 30th. Data for an additional 10 states plus the District of Columbia is tentatively scheduled for release Wednesday, May 7th: Alabama, California, D.C., Illinois, Kansas, Maryland, Nebraska, Oklahoma, Ohio, Puerto Rico and Texas. We do not know when the remaining states will be released, so it's advised to keep close tabs on the main PUMS page, provided above. PUMS Technical Documentation is here: http://www.census.gov/prod/cen2000/doc/pums.pdf For more on the use of PUMS in transportation planning, visit our TRB Subcommittee's web page at: http://www.census.gov/prod/cen2000/doc/pums.pdf Chuck Purvis, MTC ************************************************************** Charles L. Purvis, AICP Principal Transportation Planner/Analyst Metropolitan Transportation Commission 101 Eighth Street Oakland, CA 94607-4700 (510) 464-7731 (office) (510) 464-7848 (fax) www: http://www.mtc.ca.gov/ Census WWW: http://www.bayareacensus.ca.gov/ **************************************************************

21 years, 6 months

Census News Brief #7 (long post)

by ed christopher

Census Bureau Releases Revised Census 2000 Accuracy Estimates; ACS Hearing Scheduled; Legislative and Budget Updates; Census Advisory Committee Meetings; and more. The Census Bureau has released place-level Census 2000 A.C.E. Revision II estimates on its Internet site, representing the second set of small area, unofficial population numbers produced from the post-census coverage measurement survey. Last fall, the Bureau publicly released block-level, statistically adjusted numbers under court order in a Freedom of Information Act case brought by two Oregon state legislators; those data were based on the Bureaus initial review of the Accuracy and Coverage Evaluation results. Census Bureau Director C. Louis Kincannon said last month that while the Revision II estimates represent the most accurate assessment of Census 2000 coverage to date, unresolved concerns about the coverage measurement and adjustment methodologies led him to reaffirm the agencys prior decision not to use the A.C.E.-adjusted figures as a base for calculating population estimates throughout the decade. The adjusted data are available on the Census Bureaus web site at http://www.census.gov/dmd/www/pdf/pp-60r.pdf. A discussion of technical issues related to the A.C.E. Revision II estimates is available at http://www.census.gov/dmd/www/pdf/ACETechAssess.pdf. Revised estimates of undercount and overcount by race and ethnicity are available at http://www.census.gov/dmd/www/pdf/pp-02r.pdf. (Also see the April 7, 2003, Census News Brief for a summary of the revised estimates of Census 2000 accuracy.) House Subcommittee to Review ACS Plans: The newly-created House Subcommittee on Technology, Information Policy, Intergovernmental Relations, and the Census will hold its first oversight hearing on the census, focusing on plans for the American Community Survey (ACS). The hearing is scheduled for Tuesday, May 13, at 10:00 a.m., in Room 2154 Rayburn House Office Building. The Government Reform committee panel, chaired by Rep. Adam Putnam (R-FL), has not released a witness list for the hearing. (See the April 7, 2003, Census News Brief for a full list of subcommittee members.) ACS Update and Clarification: The April 7 2003, Census News Brief reported that the Census Bureau is testing voluntary response in the American Community Survey in 31 test sites. The Bureau also is evaluating the effects of voluntary response in the Supplementary Survey, an annual national sample of 700,000 homes designed to assess ACS methodology and data quality. While most households in the current test surveys are being notified that their participation is voluntary, a small control group of homes continues to receive instructions that the law requires their response. The U.S. Department of House and Urban Development (HUD) has issued a report assessing the potential consequences for HUD programs of moving from census long form to ACS data. The American Community Survey: Challenges and Opportunities for HUD (September 27, 2002), prepared under contract by ORC Macro, identified 25 department activities that currently use long form data, including funding formulas for community development and Indian housing block grants, and federal housing fair share allocations; eligibility determinations for low income housing tax credits and mortgage revenue bonds; monitoring and enforcement of fair housing laws; and Fair Market Rent calculations. The report concluded that the ACS will benefit both HUD and its clients, particularly because more current data will improve all HUD activities that rely on long form information, as well as create opportunities for new uses of ACS annually-updated estimates. Using ACS data in place of long form data, the authors found, will create no problems for current HUD applications that HUD users will not be able to solve in timely and technically acceptable ways. A third conclusion acknowledged that using ACS instead of long form data will present challenges for some HUD applications and require the department to anticipat[e] problems and devis[e] solutions. The report discusses thirteen issues that HUD will face related to the transition from census long form to ACS data, including treatment of group quarters, differences between point-in-time versus averaged estimates, less precise data due to the smaller ACS sample size, and phased-in availability of small area estimates. The authors suggest that using ACS data will require more HUD staff resources, to address technical and programmatic challenges associated with shifting to a new set of data and to take advantage of annually available data. The HUD report is available on-line at http://www.huduser.org/publications/polleg/acs.html. Budget update: The House and Senate reached agreement on a budget resolution (H.Con.Res. 95) for fiscal year 2004 (FY04), with both chambers adopting the conference report on April 11 along mostly party lines. The annual bill is Congress blueprint for federal spending; it does not become law or require the Presidents signature. The final resolution provides $784.5 billion in total discretionary spending for FY04, a 2.4 percent increase over current year levels (excluding the recently passed supplemental appropriations bill covering primarily war-related activities). Of that amount, $400.1 billion would be allocated to defense programs, while $384.4 billion would be divided among all other discretionary federal activities. House and Senate negotiators were able to agree on overall spending limits after putting off a final decision on the amount of any future tax cuts that are a centerpiece of President Bushs economic plan. The House and Senate Appropriations Committees will now allocate discretionary funds among the thirteen regular appropriations accounts. The Census Bureau is funded through the Commerce, Justice, State, and The Judiciary appropriations bill. Legislative Update Census Bills Introduced: Rep. Carolyn B. Maloney (R-NY), former senior Democrat on the House census oversight subcommittee, has introduced three bills related to the Census Bureau and its programs. The measures were referred to the House Committee on Government Reform. H.R. 1541, with seven original Democratic cosponsors, would amend the Census Act (title 13, United States Code) to provide for a just apportionment of the U.S. House of Representatives. The bill would strike an exception related to congressional apportionment in a provision of the law encouraging the use of statistical sampling in censuses and surveys. The U.S. Supreme Court ruled in 1999 that the exception in section 195 of the Census Act prohibited the use of statistical sampling methods to compile state population totals used to apportion seats in Congress among the 50 states (Department of Commerce v. U.S. House of Representatives, 525 U.S. 316). H.R. 1571 would set a five-year fixed term for the Director of the Census Bureau, and specify that the director would report directly to the Secretary of Commerce. Under current law, the director is appointed by the President with the advice and consent of the U.S. Senate, and serves at the pleasure of the President. When a President leaves office, the director traditionally steps down to allow the new Administration to nominate its own candidate for the post, especially if the incoming President is from the opposing political party. Most federal statistical agency heads, such as the Commissioner of Labor Statistics, serve a fixed term of office (they can be re-nominated by the President). Section 21 of the Census Act also says that the census director shall perform such duties imposed by law, regulations, or orders of the Secretary; the Maloney bill would add a direct line of authority to the Commerce Secretary. Under the Departments current organizational structure, the Census Bureau is part of the Economic and Statistics Administration, headed by an Under Secretary of Commerce for Economic Affairs. H.R. 1619, the Census of Americans Abroad Act, would mandate a test census by September 30, 2004, of Americans living abroad, and inclusion of federal personnel (including members of the armed forces) and private American citizens residing overseas in the 2010 and subsequent censuses. The Census Bureau already is planning to test the feasibility of counting private American citizens abroad and requested $2.5 million to conduct the test in Kuwait, France, and Mexico in FY04. The bill also would require the Commerce Secretary to recommend counting methods and the purposes for which the count of overseas Americans should be used, by June 30, 2005, and to conduct subsequent tests of overseas enumeration methods in 2006. Finally, H.R. 1619 instructs the Secretary to include Americans living abroad in the 2010 decennial census and to use those counts in ways the Secretary considers feasible and appropriate. In Census 2000, the Bureau counted members of the armed forces and civilian federal employees (and their dependents) stationed overseas on Census Day, using administrative records. The numbers were included only in state population totals used to reapportion the U.S. House of Representatives. The State of Utah unsuccessfully sued the Census Bureau after post-census analyses showed that the overseas counts cost Utah an additional seat in Congress; the seat went to North Carolina instead. Military and federal government personnel abroad also were counted for apportionment purposes in the 1990 census. Two original cosponsors signed on to H.R. 1619: Rep. Michael McNulty (D-NY) and Rep. Thomas Petri (R-WI). Both legislators served on the now-defunct Subcommittee on Census and Population (later renamed the Subcommittee on Census, Statistics, and Postal Personnel) in the early 1990s. Census Advisory Committees To Meet in May: The Census Bureaus five Race and Ethnic Advisory Committees (REACs, which represent the African American, American Indian and Alaska Native, Asian, Hispanic, and Native Hawaiian and Other Pacific Islander populations) will meet jointly on May 6 7, followed by a meeting of the Commerce Departments Decennial Census Advisory Committee (DCAC) on May 8 9. The meetings will be held at the Sheraton Reston Hotel, 11810 Sunrise Valley Drive, Reston, VA (703-620-9000). The REACs will meet from 8:00 am 5:30 pm on May 6, and from 8:00 am 12:30 pm on May 7, when the five committees will meet in concurrent sessions and develop recommendations. The DCAC will meet from 8:30 am 5:15 pm on May 8, and from 8:30 am 12:00 pm on May 9. All proceedings are open to the public. The agendas for both meetings include general updates from Commerce Department and Census Bureau officials; discussion of plans to reengineer the 2010 census, which include replacing the traditional long form with the American Community Survey and administering a short form-only census; recent revisions to Census 2000 Accuracy and Coverage Evaluation estimates; and working group sessions on small populations, language, data quality, and race and ethnicity. Census News Briefs are prepared by Terri Ann Lowenthal, an independent consultant in Washington, DC. Please direct questions about the information in this News Brief to Ms. Lowenthal at 202/484-2270 or by e-mail at terriann2k(a)aol.com. Thank you to the Communications Consortium Media Center for posting the News Briefs on the Census 2000 Initiative web site, at www.census2000.org. Please feel free to circulate this information to colleagues and other interested individuals.

21 years, 6 months

1% PUMS First Release @ 12:01 A.M. on 4/23/03 for FL, NY, RI, VT, and WY

by Chuck Purvis

(Forwarded from State Data Center listserv, of general interest) FYI.. The Census Bureau will place the 1% PUMS state files on the ftp and http sites on Wednesday 4/23/03 at 12:01 AM for: FL, NY, RI, VT, and WY There will be no embargo period for this or future 1% PUMS releases. Subsequent releases will be on Tuesdays at 12:01 AM. The 1% PUMS data will be released for all of the states by May 2003. CLO will provide the SDC network with the CD-ROMs after May 2003. The web sites are: For ftp, the url will be ftp://ftp2.census.gov/census_2000/datasets/PUMS/OnePercent For http, the url will be http://www2.census.gov/census_2000/datasets/PUMS/OnePercent Renée Jefferson-Copeland Customer Liaison Office Census Bureau

21 years, 6 months

Increasing Reliance on the Auto Documented in the Latest Survey

by C. Kenneth Orski

For your information -- the text of a new Innovation Brief on the NHTS C. Kenneth Orski korski(a)erols.com tel: 301.299.1996 fax: 301.299.4425 http://www.innobriefs.com

21 years, 6 months

Re: [CTPP] 1980 County-to-County Worker Flows

by Chuck Purvis

Bob and others: The 1970, 1980 and 1990 data on county-to-county total commuter flows is available on the Department of Commerce, Bureau of Economic Analysis web site at: http://www.bea.doc.gov/bea/regional/reis/jtw/ Anything finer grained that county, or county-to-county by means of transportation to work, would have to be extracted from your old 1970 UTP, 1980 UTPP and 1990 CTPP data files. Note that the 1980 Census workplace information was coded for only half of the long form sample. So, essentially the sampling rate for the 1980 commute flows is about 1-in-12, not the 1-in-6 sampling rate we have from the 1990 and 2000 Censuses. Also note that the largest county-of-work in the 1970 Census is "Not Reported." So, take care in how you report/allocate/impute the 1970 data, if at all. Chuck Purvis, MTC >>> "Bob Paddock" <bob.paddock(a)METC.STATE.MN.US> 04/18/03 07:40AM >>> Pardon my asking this, but are county-to-county worker flows available from the 1980 census datafiles? I know that it goes back a bit and is not the latest and greatest from the US Census. I have some flow data but am looking for additional counties to include in my review. Bob Paddock Metropolitan Council Minneapols-St.Paul

21 years, 6 months

1980 County-to-County Worker Flows

by Bob Paddock

Pardon my asking this, but are county-to-county worker flows available from the 1980 census datafiles? I know that it goes back a bit and is not the latest and greatest from the US Census. I have some flow data but am looking for additional counties to include in my review. Bob Paddock Metropolitan Council Minneapols-St.Paul

21 years, 6 months

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ctpp-news April 2003