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Measuring Annual Demographic Change New reports from the March 2004 Current Population Survey (CPS) highlight characteristics of demographic change in the U.S. "America's Families and Living Arrangements, 2003" reviews annual household composition and change. It reveals, for example, that the latest annual estimates show that U.S. household size continues to shrink. 20.9% of households in 1970 had 5 or more people compared to 9.8% of households in 2003. "Income, Poverty, and Health Insurance Coverage in the United States: 2003" covers income and insurance topics. While there are many data resources measuring U.S. annual demographic change, the March CPS-based annual reports and corresponding public use microdata data file (aka "Annual Demographic File") are of particular note. Prepared annually, based on the March Current Population Survey of the same year, these reports chronicle basic demographic year-to-year change. The related public use microdata file provides a rich resource that can be used to develop tabulations of relevance to your analyses. The Current Population Survey (CPS) is a monthly survey of about 50,000 households (March Supplement now approximately 100,000 households) that has been conducted for more than 50 years. The March CPS microdata files, also referred to as the Annual Demographic File and now the Annual Social and Economic Supplement (ASEC) microdata file (2003 and 2004), are available on an annual basis from circa 1970 annually through 2004. The CPS, a joint Bureau of Labor Statistics and Census Bureau statistical program, is the primary source of information on the labor force characteristics of the U.S. population. The sample is selected to represent the noninstitutional population and provides the basis for estimates for the U.S. overall and is used to develop model-based estimates for individual states, regions and smaller areas. Applications. The paper US Earnings and Employment Dynamics by Zvi Eckstein and Éva Nagypál provides an example of how the microdata files can be used. The CPS data are used by the Bureau of Labor Statistics in models to develop the Local Area Unemployment Statistics. Access. The 2003 and 2004 data files are now a part of the Annual Social and Economic Supplement (ASEC) and may be accessed via the ASEC Web page. Access other recent microdata files via the BLS CPS Data Access site. The collective set of CPS March Supplement files may be accessed (downloaded) via the BLS March Supplement page. Data Access Innovation. Warren Glimpse, author of this update and founder of Proximity, arranged for public access to the first time-series oriented annual set of Annual Demographic Files while with the Census Bureau. |
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