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2560 discussions

Re: [CTPP] 2006 ACS Data

by Chuck Purvis

Paul: The simple answer is no. No data from the ACS is currently available at the block group or block level. You will need to use Census 2000 (SF1, PL 94-171) to get any kind of data at the block level. For the block group level, you can use almost any Census 2000 product (SF1, PL 94-171, SF3, CTPP-Part 1). The ACS will never, ever produce or publish data at the block level. The ACS is a sample survey, and the Census Bureau will never release sample data at the block level of geography. Block *group* data could or should be published by the Census Bureau based on five-years of ACS data (2005-2009) as early as Fall 2010(?). Then, the Census 2010 data will start kicking in with the PL94-171 data released by the spring of 2011. For aggregate travel model validation, on the other hand, the mid-decade ACS data can be very, very useful. Right now, you can get validation tables such as households by household size; households by number of workers in the household; and households by number of vehicles available in the household. I think these are quite useful for your "demographic model" validation. Also, the journey-to-work data is being published, so that you can produce "observed home-based work trip ends by means of transportation" by area-of-residence as well as area-of-work. Depending on the size of your region, you may be stuck with county (as long as the county's total population is > 65,000); or you may be able to use the data published at the Public Use Microdata Area (PUMA) level. These are the Census 2000 PUMAs, and are "standard census geographic areas" that were defined by the state data center network, and are all 100,000+ in total population. If you're working with smaller counties (20,000-65,000 population) then you'll have to wait for the 3-year ACS data products, based on the 2005-2007 period, which will be released as early as Fall 2008. cheers, Chuck Purvis ************************************************************** Charles L. Purvis, AICP Principal Transportation Planner/Analyst Metropolitan Transportation Commission 101 Eighth Street Oakland, CA 94607-4700 (510) 817-5755 (office) (510) 817-7848 (fax) cpurvis(a)mtc.ca.gov (e-mail) www: http://www.mtc.ca.gov/ ************************************************************** >>> "Flavien, Paul H" <PHFlavien(a)pbsj.com> 10/18/07 12:27 PM >>> Hi all, We are about to undertake a model validation. As part of the validation, the socio-economic inputs (housing, population, etc.) will be updated. We've searched the Census website for data, but so far we've only been able to find ACS data at the county level. Is there any ACS data available at the block group or block level? Paul H Flavien PBS&J Planner- Transportation Planning 1901 Commonwealth Lane Tallahassee, FL 32301 (850) 575-1800 ext: 7884 Fax: (850) 575-1083 phflavien(a)pbsj.com

18 years, 4 months

2006 ACS Data

by Flavien, Paul H

Hi all, We are about to undertake a model validation. As part of the validation, the socio-economic inputs (housing, population, etc.) will be updated. We've searched the Census website for data, but so far we've only been able to find ACS data at the county level. Is there any ACS data available at the block group or block level? Paul H Flavien PBS&J Planner- Transportation Planning 1901 Commonwealth Lane Tallahassee, FL 32301 (850) 575-1800 ext: 7884 Fax: (850) 575-1083 phflavien(a)pbsj.com

18 years, 4 months

Census Nerws Brief

by ed christopher

Terri Ann has sent along her latest Census News Brief (attached). It discusses the status of funding for 2010 census preparations, the 2007 Economic Census, and other key milestones on the road to Census 2010. Needless to say as long as Congress continues to put the federal agencies (Commerce and the Census Bureau) under continuing resolutions preparations for the next census will be threatened. ----------------- Ed Christopher Resource Center Planning Team Federal Highway Administration 19900 Governors Drive Olympia Fields, Illinois 60461 708-283-3534 (V) 708-574-8131 (cell) 708-283-3501 (F)

18 years, 4 months

HUD / USPS vacancy data

by Jonathan Lupton

Like Ms. Bousefield in Chicago, I find the HUD vacancy figures running very low. The ACS county-level vacancy data appear far more accurate in our area, but they are not available at the tract level yet. However, the HUD data do appear to reflect different characteristics of tracts - they correctly identify areas of generally higher vacancy. Therefore, I may be able to use the HUD figures to identify changes in vacancy by tract over time. The HUD figures do not separate businesses from residences. Therefore, like so many other sources, they are useful but not fully compatible with other data sets. Jonathan Lupton Metroplan - Little Rock AR

18 years, 5 months

Re: TAZs, TAZs Everywhere

by Sam.Granato＠dot.state.oh.us

70 pages?? It takes only one sentence to say zone boundaries need to be based on access to the network being modeled, period. Sam Granato Ohio DOT, Office of Technical Services 1980 W. Broad Street, Columbus, OH 43223 Phone: 614-644-6796, Fax: 614-752-8646 "You will be flogged for being right and flogged for being wrong, but it hurts less when you're right." - Hunter S. Thompson The Florida DOT has just posted a 70 page report discussing TAZs and their construction. While the information is for the model users community in Florida there is a wealth of information in the report that those who think about such things will find of interest. The document is well worth adding to any list of TAZs references that you may have. The report can be found on the Florida Transportation Modeling web site at http://www.fsutmsonline.net/index.php?/site/directory/model_docs The direct link to the report is http://www.fsutmsonline.net/images/uploads/reports/FDOT_TAZ_White_Paper.pdf

18 years, 5 months

TAZs, TAZs Everywhere

by ed christopher

The Florida DOT has just posted a 70 page report discussing TAZs and their construction. While the information is for the model users community in Florida there is a wealth of information in the report that those who think about such things will find of interest. The document is well worth adding to any list of TAZs references that you may have. The report can be found on the Florida Transportation Modeling web site at http://www.fsutmsonline.net/index.php?/site/directory/model_docs The direct link to the report is http://www.fsutmsonline.net/images/uploads/reports/FDOT_TAZ_White_Paper.pdf If other States or Regions have similar documents I wouldn't mind learning about them and adding them to our ever growing list of data related resources. -- Ed Christopher FHWA Resource Center 19900 Governors Drive Olympia Fields, Illinois 60461 708-283-3534 (v) 708-283-3501 (f) 708-574-8131 (cell)

18 years, 5 months

Impact of Congressional Continuing Resolution on Census programs

by Murakami, Elaine

FYI, via the Association of Public Data Users. _____ From: Patty Becker [mailto:pbecker@umich.edu] Sent: Tuesday, September 25, 2007 8:36 AM To: APDUMEM(a)apdu.org Subject: [APDU members] Impact of Congressional Continuing Resolution Hi all, At this point, it is clear that the Congress will not complete its budgeting job this week in time for the new fiscal year, making a continuing resolution (CR) inevitable. Below, please find a communication from Terri Ann Lowenthal, APDU Board member, about the impact of the CR on the Census Bureau: Good afternoon, census stakeholders. A quick update on the status of Fiscal Year 2008 funding for the Census Bureau, and a call for IMMEDIATE help in convincing House and Senate appropriators to provide adquate funds for Census in the short-term Continuing Resolution before Congress this week. As you know, the fiscal year ends this weekend. The House will take up a CR as soon as Wednesday. The CR would allocate funds at the FISCAL YEAR 2007 LEVEL through November 16 (at the earliest; another CR might be necessary then). This outcome would spell disaster for key Census programs. The Census Bureau received $893 million in FY07. For FY08, the Administration requested $202.8 million for Salaries & Expenses, and $1,027.4 million for Periodic Censuses and Programs. The House bill provides $196.8 million for S&E and $1,025.4 million for Periodics. The Senate committee bill provides $226.2 million for S&E and $1,020.4 million for Periodics. Overall, the Administration requested a 37.7 percent increase for the Census Bureau, in recognition of final preparations for Census 2010 and the 2007 Economic Census and Census of Governments, among other important activities. Unofficial word from known sources (no one in the Census Bureau is allowed to speak about this publicly) is that proposed funding levels in the CR would endanger conduct of the 2008 Dress Rehearsal (preparations are in full swing and the DR takes place on a census schedule next March - summer) or use of handheld computers for non-response follow-up in the census. The handhelds are being developed for deployment in the Dress Rehearsal. If they are not used then, it is very possible/likely they will not be used in 2010. Please make any immediate contacts you can with staff/Members on House and Senate Appropriations Committees, or other influential Members of Congress, in support of an exception to proposed funding levels for the Census Bureau in the CR. The Census Bureau is on a major cyclical funding upswing ... it cannot continue to function at last year's funding levels for a few months. Keep in mind that the 2007 Economic Census and Census of Governments are starting this fall, with forms going out in December/January. That cannot be delayed either. Please also share this message with others in your census network. =============================== Patricia C. (Patty) Becker 248/354-6520 APB Associates/SEMCC/APDU FAX 248/354-6645 28300 Franklin Rd Home 248/355-2428 Southfield, MI 48034 pbecker(a)umich.edu

18 years, 5 months

2006 ACS data release from the Census Bureau DECODER RING

by Murakami, Elaine

Here is the REAL message I meant to send! Apologies for hitting the "send" button earlier. Thank you to Celia Boertlein and Kin Koerber at the Census Bureau for the original materials and the recent updates related to 2006 ACS tabulations. September 27 is the scheduled release date for the remainder of 2006 ACS data standard products. Also, comments to the Federal Register Notice on ACS Data Products (Docket 070725407-7408-01) http://a257.g.akamaitech.net/7/257/2422/01jan20071800/edocket.access.gpo .gov/2007/E7-16850.htm are due September 28. ACS TABLE NAMING AND NUMBERING The first character in the table is a key to the type of the table. Subject "S" Several tables compiled together addressing a specific subject. Limited to areas with 1+ million population. Base or Detailed "B" These tables are used to create the Subject tables, but can be used independently. Collapsed "C" These tables are a smaller version of the Base tables with a reduced number of categories to reduce suppression. However, some tables may still be suppressed if the coefficient of variation among the cells is too high. Ranking "R" These tables sort the results based on individual values, for example, average travel time, or percent using transit as means of transportation to work. For 2005, these are given for State totals. Data Profiles: There are 4 profile sheets: demographics, social, economic, housing, and 1 narrative document. The economic profile includes workers and commuting. Selected Population Profiles: These are tables by race, ethnicity and ancestry. All the JTW and Place of Work tables begin with "08". As for the detailed (base) tables, there is somewhat of a pattern. Those beginning with B080 or C080 support the Subject Table S0801. Also included in that set are the Place of Work by metro/micro/non-metro or -micro tables (B08016-B08018/C08016-C08018). The latter are included with the others since S0801 uses the other Place of Work tables. However, S0801 does use some JTW tables. The workplace-based tables that parallel those detailed tables start with B084 or C084. The last two digits are the same for corresponding residence-based and workplace-based tables. The detailed tables that are used for the Means of Transportation Subject Table (S0802), are numbered starting with either B081 or C081. The workplace-based tables that parallel those detailed tables start with B085 or C085. The last two digits are the same for corresponding residence-based and workplace-based tables. The household data detailed tables that were requested by DOT and not used in any other products are numbered starting with either B082 or C082. These are: B08201: Household Size by Vehicles Available B08202: Household Size by Number of Workers B08203: Number of Workers by Vehicles Available For the 2006 ACS, new one-dimensional JTW detailed tables have been added, and start with either B083 or C083. The workplace-based tables that parallel those detailed tables will start with B086 or C086. The last two digits will be the same for corresponding residence-based and workplace-based tables. B08301 Means of Transportation to Work B08302 Time Leaving Home B08303 Travel Time There will be holes in the numbering where tables are removed. The links to the topic search results: The link for Journey to Work is - http://www.census.gov/acs/www/acs-php/2006_experienced_users_guide.php?a cs_topic=Journey+to+Work for Place of Work -- http://www.census.gov/acs/www/acs-php/2006_experienced_users_guide.php?a cs_topic=Place+of+Work for Vehicles Available -- http://www.census.gov/acs/www/acs-php/2006_experienced_users_guide.php?a cs_topic=Vehicles+Available Another resource is the ACS 2006 Data Users Handbook -- http://www.census.gov/acs/www/Downloads/Handbook2006.pdf The CB's Journey to Work and Migration branch was asked to reduce the number of ACS standard tables for 2006 and beyond. Here's the list of what was removed. 1) Subject Table S0803. Worker characteristics crossed by sex. These subject tables are only produced for areas with 1 million+ population. 2) Mean travel time in S0802. Delete the mean travel time to work column from subject table S0802. Some tables with travel time distributions remain e.g. B08012, B08134. 3) Means of Transportation by Marital Status : This change deletes all the marital status by means of transportation data. 4) Means of Transportation by Educational Attainment: This removes all the educational attainment by means of transportation data. 5) Means of Transportation by Household Type: This removes all the household type by means of transportation data. Don't forget that we created our own profiles using the 2005 ACS results. These are available at: http://ctpp.transportation.org/home/default.htm and include some data from 1990 and 2000. We do not plan to prepare new profiles using the 2006 ACS results, as the differences are likely to be small except for areas with large group quarters population, and due to limitations in staff resources. Elaine Murakami FHWA Office of Planning 206-220-4460 (in Seattle)

18 years, 5 months

Recall: 2006 ACS data release by Census Bureau

by Murakami, Elaine

Murakami, Elaine would like to recall the message, "2006 ACS data release by Census Bureau ".

18 years, 5 months

2006 ACS data release by Census Bureau

by Murakami, Elaine

The deletions you mention were all deleted and the tables mentioned that were to be added were. The links to the topic search results STILL link to 2005 Data Users Guide (I have no idea why but suspect that they've not finished up the 2006?) but yours no longer work -- The link for Journey to Work is now -- http://www.census.gov/acs/www/acs-php/experienced_users_guide.php?acs_to pic=Journey+to+Work for Place of Work -- http://www.census.gov/acs/www/acs-php/experienced_users_guide.php?acs_to pic=Place+of+Work for Vehicles Available -- http://www.census.gov/acs/www/acs-php/experienced_users_guide.php?acs_to pic=Vehicles+Available You may also want to link to the 2006 Data Users Handbook -- http://www.census.gov/acs/www/Downloads/Handbook2006.pdf I rather think that it could be useful as general overview although there may be other things off the "How to use the data" page that might also be mentioned -- http://www.census.gov/acs/www/UseData/index.htm http://www.chrispy.net/pipermail/ctpp-news/2007-March/001569.html I will ADD to the email to list the specific ADDED tables in B083, C083, B086 and C086 series.

18 years, 5 months

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