CTPP April 2001

ctpp@listserv.transportation.org

4 participants
7 discussions

[CTPP] Census 2000 Demographic Profile pages

by Chuck Purvis

TO: CTPP-News listserv Now that we've all had time to thoroughly digest the PL 94-171 data file, the Census Bureau will be developing a one-page "Demographic Profile" (DP-1) for all states, counties and places in the US. This Demographic Profile will be based on 100% short form data. It will be released on a flow basis over the next few months. These one-page profiles will be released in PDF format, and available on American FactFinder. Data files will also be released, either in DBF or ASCII or formats to be determined. Eventually this Demographic Profile page will be prepared for all (?) census tracts. Expected release schedule for these Demographic Profiles is May through July (according to the Census Bureau's page) though we should be expecting national data in the next couple of weeks. Data items included in the Demographic Profile will be fairly simple tabulations, for example: total population by sex; total population by age cohorts (5-yr increments to 85+); total population age 18+ and 65+ by sex; and total population age 21+ and 62+. This will be the *first* release of detailed Asian (Asian Indian, Chinese, Filipino, Japanese, Vietnamese, Korean, Other Asian), Native Hawaiian/Pac Islander (Hawaiian, Guamanian, Samoan, Other Pacific Islander) and detailed Hispanic/Latino (Mexican, Puerto Rican, Cuban, Other Latino) population. The Demographic Profile will also have data on number of households and household population; group quarters population (institutional and non-institutional); relationship to householder; family and non-family households; average household size; average family size; vacant housing units; and housing units by owner/renter tenure and average household size by owner/renter tenure. For a sample of what data will be available you can check out the DRAFT (?) profile format: http://www.sdcbidc.iupui.edu/Census_2000/census_2000.html When you go to this page, click on "Demographic Profile." It is the second line. I don't know too much else, but some of us are monitoring the discussions on the State Data Center listserv & talking to Census staff. I don't know if *all* of the "large area" (state, county) data will be released before *any* of the "small area" (city, place, tract) is released. I guess we'll all find out in a month or so! Again, these DP-1 pages are due out May - July 2001. The detailed SF-1 short form datasets are due out June - September 2001. Recommend bookmarking the census release schedule at: http://factfinder.census.gov/home/en/releaseschedule.html Hope this helps! (Census Bureau folk should jump in to correct any glaring errors or omissions! thx) Chuck Purvis, Metropolitan Transportation Commission, TRB Urban Data Committee Chair, & SF Bay Area census analyst for ABAG/MTC Regional Data Center.

23 years

[CTPP] urbanized area boundaries

by ed christopher

Tonight at our census session at the "8th Conference on the Application of Transportation Planning Methods" Joe Marinucci, Chief of Geographic Areas Branch in the Geography Division of the Census Bureau noted that the Bureau was taking steps to extend the comment period on the UAZ definitional criteria for 30 more days. He said that it would take about two weeks to get the notice of the extension out so with the extension and the two week period it will be more like a 45 day extension. The comments were due back by April 27th. For more information on the UAZ issue see http://www.fhwa.dot.gov/planning/criteria.htm

23 years

[CTPP] Census Population Ranking of Cities, Counties, Metro Areas

by Chuck Purvis

TO: CTPP-News The Census Bureau is complementing the American FactFinder with a very nice set of comparison tables. These tables were released this past Monday, April 2nd. These are helpful if you're looking at metropolitan areas, counties and places 100,000+ population ranked by 2000 total population. Tables give 1990 population as well, and also provide tables on areas ranked by population change and percent population change. You can get these comparison tables by going to American FactFinder at: http://factfinder.census.gov/ Then, click on "Census 2000 Special Tables and Reports"; then, click on "List of Tables" and you're there. Or, try this URL: http://www.census.gov/population/www/cen2000/tablist.html (Trying to find Census 2000 data is like an Easter Egg Hunt. You gotta know when to look, and where the good ones are hidden ;-) cheers, Chuck Purvis, MTC

23 years

[CTPP] MPO Assistance in Census 2000 Place of Work Geocoding

by phillip.a.salopek＠census.gov

Last December, we sent a message to this listserve to see how many MPOs would be willing and/or able to assist the Census Bureau in resolving the most difficult to geocode place of work responses from Census 2000. We received responses from over a hundred agencies, the vast majority indicating that they would participate in such a program. Some of you may remember that a similar activity was planned for the 1990 Census, but the Bureau never implemented it and no MPOs were given an opportunity to contribute. Based on the number of favorable responses to our December inquiry, I went forward within the Bureau to try to get approval for this activity for Census 2000. I spoke with our Policy Office and with our Legal department. Some questions about confidentiality and Title 13 requirements were raised, and I was directed to present my case to the Bureau's Disclosure Review Board (DRB). I submitted a request to the DRB for approval to implement the program, emphasizing that the information provided to the MPOs would not be individual responses. Rather, we would group responses from several people that seemed to represent the same employer or workplace location, building synthetic responses or what we call "clusters." In effect, the MPOs would be receiving address information culled from a number of census questionnaires. In mid-March I received a decision from the Disclosure Review Board. They turned down my request to implement a program that would allow MPOs to assist in Census 2000 geocoding. It was felt that the addresses provided to the MPOs would become a microdata file of working places, and the Census Bureau does not release such files at the street address level or by employer name. Therefore, we will not be contacting any of you for assistance with our geocoding operation. I would like to thank those of you who responded to our December inquiry; I appreciate everyone's willingness to devote valuable time and resources to projects such as this, the TAZ-UP program, and the Workplace Update program. I look forward to continuing to work with you on our next big joint project, the Census Transportation Planning Package 2000. --Phil Salopek Chief, Journey-to-Work and Migration Statistics Branch Population Division US Census Bureau

23 years

[CTPP] INFORMATION: Urbanized Area Proposed Definition

by Elaine Murakami

This information (probably in revised form) will be sent to the FHWA field offices within the next day. However, I am sending this along to the CTPP listserv to get it out as soon as possible. ---------------------------------------- Attached is a document to assist those areas which may want to evaluate what the impact of the proposed definition of Urbanized Areas may be for their area. You will need to know how to use GIS to conduct this evaluation. While we conferred with the Census Bureau staff to assure that these notes are correct, we cannot guarantee them. You will want to print this in COLOR to be able to read the maps. Technical questions should be addressed to ua(a)geo.census.gov. You may also call the Census Bureau Geography Division at 301-457-1099. Comments to the Federal Register notice (posted at www.census.gov/geo/www/ua/ua_2k.html) are due by April 27, 2001. Comments should be submitted to Director, U.S. Census Bureau, Room 2049, Fedral Building 3, Washington, D.C. 20233-0001. The FHWA Office of Metropolitan Planning prepared these notes to assist local areas, however, we will not be checking individual areas against these proposed criteria, and will not be able to provide technical assistance in operating ArcView or ArcInfo.

23 years

[CTPP] PUMA 2000 Delineation Program

by Chuck Purvis

TO: CTPP-News listserv FR: Chuck Purvis, MTC RE: PUMA Delineation Program The following are a series of talking points (from a Census Bureau staff person?) from the March 2001 meeting of the State Data Center network. They describe the upcoming program to delineate the 1 percent and 5 percent Public Use Microdata Areas (PUMAs). Since this is an open process, I would encourage staff of Metropolitan Planning Organizations to work with their State Data Centers on this program. In many cases, the MPOs are either "affiliate data centers" or "regional data centers" and are already part of the network; but there other MPOs who are new to this census game and should be more involved. I think one of the challenges in our region will be to open the process to academic PUMS researchers who cherish this dataset as much as we do. I guess my recommendation to the academic researchers is to contact your local MPO or Council of Government to see who's doing what in PUMA definition. Chuck Purvis, MTC *********************************************************************************** 2000 PUMA Delineation Program WHAT Delineation of 5-percent and 1-percent Public Use Microdata Areas >100,000 population minimum for the 5-percent PUMAs >400,000 population minimum for the 1-percent PUMAs WHERE SDC does the delineation themselves SDC coordinates local delineation Must be an OPEN PROCESS WHEN 90-day period for the initial delineation (June-August 2001) 30-day period for the verification phase (November-December 2001) 5-Percent PUMA Criteria RULES Delineate PUMAs for entire state Counties with <100,000 cannot be split Boundaries follow counties and census tracts or incorporated places >100,000 PUMAs must be contiguous RECOMMENDATIONS MA/non-MA segregation Cities >100,000 Comparability with 1990 1% PUMAs 100,000-200,000 in size 1-Percent PUMA Criteria Aggregations of the 5-percent PUMAs Same rules and recommendations as the 5-percent PUMAs 400,000-800,000 in size Census Bureau Provided Material Invitation Letter and PUMA Guidelines Mid April Census 2000 TIGER/Line Files (90 PUMAs) May-June Census Tract Outline Maps-Ctys. >100,000 May 1990 1-Percent PUMA Equivalency File May 2000 PUMA Geographic Equivalency File May PUMA Verification Outline Maps October-November PUMA Verification Equivalency File October-November *********************************************** Charles L. Purvis, AICP Senior 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/ ***********************************************

23 years

[CTPP] Los Angeles (USC) Census web site

by Chuck Purvis

To: CTPP-News This is an *excellent* web site on census data, with focus on Los Angeles County, by Prof. Dowell Myers and his colleagues at the University of Southern California. The animated maps are fascinating. Great stuff! Chuck Purvis, MTC ******************************************************************** Date: Sat, 31 Mar 2001 10:31:17 -0800 To: URBGEOG(a)LISTSERV.ARIZONA.EDU From: Dowell Myers <dowell(a)rcf-fs.usc.edu> Subject: New Website on 2000 Race in California and the US Cc: jychung(a)usc.edu Dear Colleagues, With release of data on race and Hispanic origin from the 2000 census, we have set up a new website at USC that provides a full comparison of the 50 states, including details on California and Los Angeles. This site reports findings from a project on the changing contours of race and Hispanic origin, Race Contours 2000. (Co-investigators are Dowell Myers, Philip Ethington, Angela James, and William Frey.) The site address is: http://www.usc.edu/sppd/census2000 Contents focus on findings from the new multiracial question in the census, and highlight spatial differences in racial patterns. Graphs compare all 50 states (especially Mississippi and California!). In California, we have identified a "multiracial belt" in the center of the state. (It is not in San Francisco.) Also on the site is an evaluation of where total population growth in California counties, or growth of specific racial groups, exceeded what was previously forecast. Within Los Angeles County, we have posted a unique set of *animated maps* that traces the spread of racial diversity from 1940 to 2000. We call these maps, displays of growing "racial majorities." The site also includes measures of exposure and dissimilarity from 1940 to 2000 for four main race-ethnic groups. Soon to be added is a summary of changes in composition and growing diversity for specific communities in the Los Angeles area. Of general interest to all: the site includes a resource of some importance. "Overlap" is the title of our multi-section user guide to race and Hispanic origin in Census 2000. The major changes in the 2000 census necessitate much more careful consideration by all census data users. We welcome your visit! http://www.usc.edu/sppd/census2000 Dowell Myers Project PI -- -- Dowell Myers Director, Master of Planning Program School of Policy, Planning & Development 301 Lewis Hall Phone: (213) 740-7095 University of Southern California FAX: (213) 821-1466 Los Angeles, CA 90089-0626 Internet: dowell(a)rcf.usc.edu http://www-rcf.usc.edu/~dowell/ http://www.usc.edu/schools/sppd/futures/ http://www.usc.edu/schools/sppd/admissions/excellence/

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CTPP April 2001