|
|
|
DMINews -- August 2007
Topics: • Status of the TIGER/Line Shapefiles • County Demographic Trends - updated annual age-race/ethnicity-gender estimates • Census 2010 LUCA Program Update • Changing World Demographics: Projections to 2050 -- country ranking table Status of the TIGER/Line Shapefiles The Census Bureau has announced that the 2006 Second Edition TIGER/Line files will be the last of the TIGER/Line files and that new geographic resources will replace the TIGER/Line files (see Census notes). The author of these notes developed the GBF/DIME file used as the prototype for the TIGER/Line files. The TIGER/Line files are of critical importance not only due to their role for the decennial census and related programs but also for a myriad of GIS applications -- as the source for many types of landmarks point shapefiles; streets and other line shapefiles; and block, tract, place, county, congressional district and many other wide ranging boundary files. Among the new Census Bureau public use geographic resources will be the TIGER/Line shapefiles (see Census notes). The target date for the first set of TIGER/Line shapefiles (First Edition) is Fall 2007. TIGER/Line shapefiles will be distributed to participants in the Census 2010 LUCA program. The current schedule for all of the counties to be completed through the MAF/TIGER Accuracy Improvement Project (MTAIP) is April 2008. The TIGER/Line shapefiles First Edition will include some counties that have been updated since the release of the 2006 Second Edition TIGER/Line files. 1,871 counties of the total 3,219 counties had been updated as of that release (see list). This means, among other things, that some LUCA participants will receive TIGER/Line shapefiles for areas where the MAF/TIGER Accuracy Improvement Project (MTAIP) has not been completed. See updates on this topic next month. County Demographic Trends How will demographic change in your county impact you, your business, markets, and service areas? How has the population by age-race/ethnicity-gender changed between 2000 and 2006 in a county or county grouping of interest? What will be the population in counties of interest in 2015? Recently updated annual county demographic estimates help provide answers to these questions. In August 2007, the Census Bureau released annually updated estimates of the of the U.S. by county by age, race/ethnicity, and gender for the period 2000 through 2006. These data are of critical importance in understanding how the demographic composition of individual counties, and county groupings, are changing. Proximity has augmented these data with data access and analytical software and projections to 2015. See http://proximityone.com/countytrends.htm for more information. Census 2010 LUCA Program Update The Census Bureau Local Update of Census Addresses (LUCA) program is a decennial census geographic partnership program focused on updating geographic data. LUCA gets operationally underway this summer. While the Census Bureau has announced a one month delay in sending letters of participation to highest elected officials of local governments (letters to go out in August), the earliest possible preparation will benefit participating governments. Organizing address-based housing data does not need to wait on the Census Bureau supplied materials and will be one of the largest LUCA participant challenges and time consuming steps. The LUCA program will help the Census Bureau use local knowledge in developing its Master Address File (MAF) for the 2010 Census. The LUCA program presents an important opportunity to cities and other governmental units to participate in the development of the most accurate census possible. By improving the accuracy of the census, localities improve their opportunity to receive their fair share of Federal and other governmental funding and services. In states where a congressional seat might be potentially added or lost, the collective participation of local governments across the state becomes even more important to help ensure the most accurate census possible. Tribal, state, and local governments can contribute to a more complete and accurate census for their community by reviewing and commenting on the list of housing unit and group quarters addresses that the Census Bureau will use to deliver questionnaires. The Proximity CommunityViewer software (http://proximityone.com/cv.htm) and related data resources can help LUCA participants maximize the comprehensiveness, quality, and usefulness of the LUCA-related data. The Proximity program provides a means for LUCA program participants to use the data that they help develop and establishes a structure and tools for accessing and analyzing Census 2010 data in a manner integrated with other data. See more detailed information about using CommunityViewer and the LUCA Program. Being Ready. The Census Bureau is expected to distribute the first data to LUCA participants in late September. LUCA participants should already be organizing local address data and developing strategies for LUCA-related operations. How much relative resource should be applied to address list improvement versus TIGER/Line shapefile updating? What impact will non-MTAIP vintage TIGER/Line shapefiles have on your operations? See http://proximityone.com/cv_luca_shapefiles.htm for more information. Changing World Demographics From the micro to the macro ... as we examine what is happening in our neighborhoods, the changing demographics across the world can be equally important. The world population is projected to grow from 6 billion in 1999 to 9 billion by 2042, an increase of 50 percent that will require 43 years. How are individual countries changing? As one example ... the population of Nigeria is expected to increase by 211-percent between 2000 (114 million) and 2050 (356 million). As shown in the country population trends ranking table http://proximityone.com/worldpop.htm, Nigeria ranks 9th in the world in 2007 but is ranked 4th in the world in 2050 --- right behind the U.S. Updated world by country demographic estimates and projections were completed by the Census Bureau in the summer 2007. The data cover 224 countries and areas. Subject matter include midyear population, area and density; population by age and gender; birth and death, migration and growth rates; births, deaths and migrants; life expectancy and mortality rate; and fertility. See http://www.census.gov/ipc/www/idb/ for more information. Proximity has integrated these data into a world by country shapefile enabling visual analysis of demographic composition and trends. The following two sample graphics illustrate how population distribution and size in Africa compare between 2007 and 2050. Using the CommunityViewer, you can add further detailed, sub-national, geography and your own data. Assess the implications of these changing demographics on issues of interest to you. 2007 Population in Africa 
2050 Population in Africa 
Analyze world by country demographic composition and trends using the CommunityViewer software with the ready-to-use World demographic trends project and files. Integrate your own data. Assess evolving opportunities and needs. Contact Proximity for more information (key in 'world demographics' in text section). |
|
|