Section OverviewEach year we add new documentation to reflect changes in the survey or update the existing documents to help you understand the data better. Subject DefinitionsWe have identified and defined population and housing variables to help you understand the results of the American Community Survey. These include information on how the data were collected and how they are presented in data products. Accuracy of the DataThese documents provide data users with a basic understanding of the sample design, confidentiality, sampling error, nonsampling error, estimation methodology, and accuracy of the data. ErrataThis section will keep you informed of any updates made to the data due to found errors. Data Product DetailsThis online tool allows users to obtain additional information about the 2007 data products. Users can obtain information about the set of published geographic areas within each state, lists of detailed tables by topic and lists of specific ranking tables, subject tables, and Selected Population Profiles. A variety of other links is available from this site with information about ACS data products. ACS Summary FileThe American Community Survey Summary File (ACS-SF) final version files are available. The summary file is a combination of all of the detailed tables by state in a series of files, similar to those published for Census 2000. The 2005 prototype version is also available. |
Quality measuresThe content in quality measures provides discussion and data tables at the state and national level on 4 key indicators of survey data quality -- response rates, coverage rates, sample size and allocation rates. ACS Group Quarters
Definitions and Type Codes are available! Geography NotesThe geography notes gives a brief explanation of the Census Bureaus geographic hierarchy and common terms as well as details on specific geographic areas presented in the American Community Survey data products. Using Data from the 2006 ACSThis 2006 ACS Data Users Handbook [PDF] covers a broad set of topics relating directly to the 2006 ACS. It covers the type of information produced from the ACS, including measures of quality that are critical for users to consider. Each of the specific data products is detailed in this guide, along with tips on how to access and interpret these data. Using Data from the 2006 Puerto Rico Community Survey
This 2006 PRCS Data Users Handbook (English version) [PDF] covers a broad set of topics relating directly to the 2006 Puerto Rico Community Survey. It is available in PDF format and can be downloaded for use as a reference document.
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