July 08, 2010
Participants & Presenters
July 04, 2010
ACS Data Release Main
2009 ACS Data Release Main
This is the main site for information about the American Community Survey (ACS). The release information is organized by year, so a comparable site is available for previous years - 2007, 2006, etc.
ACS 2008: Questions and Questionnaires
Subjects Planned for the 2010 Census and the ACS
This document provides the justification for the items included in the 2010 Census (short-form) and the ACS (long-form). It includes proposed new subjects, as well as the subjects that will be dropped because it is no longer required by federal agencies.
New Questions and Modifications in the ACS (2009)
Information for each of the new questions that were added to the 2009 ACS: health insurance coverage, Bachelor's field of degree, disability, marital history, and other new tables. Additionally, modifications were performed on food stamps tables and other tables.
Question by Question Fact Sheets
The fact sheets have ACS question(s), how long the question has been in use, a description of how the federal government uses the data and how those uses translate into community benefits.
On this page are examples of the current materials mailed to the sample addresses in the housing unit (HU) sample, and examples of the current materials used in the group quarters (GQ) interviewing. Also included are the HU and GQ questionnaires from prior years, and summary documents showing the changes in the questionnaires from year to year.
Design and Methodology Report & Other Details
Design and Methodology Report
This document describes the basic ACS design and methodology as of the 2007 data collection year. The purpose of this document is to provide data users and other interested individuals with documentation of the methods used in the ACS. Future updates of this report are planned to reflect additional design and methodology changes. This document is organized into 15 chapters. Each chapter includes an overview, followed by detailed documentation, and a list of references.
Technical Appendix from the ACS Compass Products
Data Collection & Processing
Chapter 13 of the ACS Design and Methodology Report discusses how aggregated data products and PUMS are prepared. For more help, see the entire report, or other individual chapters, at this link:
Group Quarters Definitions
What the ACS can tell us about Mixed Mode Surveys
This is a presentation given by Deborah Griffin, Census Bureau, at a joint SRC/PSC brownbag. It has a great deal of information on the details of the different modes of data collection (mail, phone, in-person); differences in response across the country; mode effects, etc.
ACS: Sample Size, Accuracy, Quality, Comparisons
The sample sizes for all published counties and county equivalents starting with the 2007 ACS will only be available in the B98* series of Detailed Tables on American FactFinder (AFF).
Sample size information for years prior to 2007 will remain on the ACS website and will not be added to AFF.
Accuracy of the Data
These documents provide data users with a basic understanding of the sample design, estimation methodology, and accuracy of the data.
Also note that there is a direct link to the Design and Methodology report (http://www.census.gov/acs/www/Downloads/survey_methodology/acs_design_methodology.pdf)
Quality of the Data
These quality measures are produced annually to accompany each ACS data release and describe the quality of those data. The quality measures are available at national and state levels. Clicking on "definitions" will provide additional information on each of these measures, including why the measure is important and how it was calculated.
Guidance on Comparing ACS data to Other Sources
The Census Bureau encourages users to compare ACS data with data from other sources. Guidance is needed before drawing conclusions because in some instances comparisons could be misleading due to differences in questions or methods. This page provides three forms of guidance - general guidance, item-specific guidance, and examples. For all comparisons of differing time periods, users should take into consideration that geographic boundaries for the area of interest may have changed
July 02, 2010
Class Exercises (Monday)
American FactFinder Exercises
Introduction to American FactFinder
Unusual Poverty HotSpots
Not Ready for Prime Time: zip codes and census tracts
Not Ready for Prime Time: bulk downloads of zip code data
Dealing with Delays: What to do with a 2011 Release of Zip code data
"College town 'poverty' exposed: Low-income students help win grant money"
Stephen Koff and Bill Sloat | Cleveland Plain Dealer
September 17, 2006
Data from the Summary File Exercises
Poverty rates for places [Excel]
Vacancy data for Cleveland census tracts (Census 2000) [Excel]
Median Income for zip codes (Census 2000) [Excel]
July 01, 2010
Class Exercises (Tuesday & Wednesday)
Using the ACS, 2008
Using several years of the ACS
Who has Health Insurance Coverage?
Using PDQ-Explore to Examine Newsworthy Issues
Complex Queries Using "Pointer" items
Using the Current Population Survey
Additional PDQ-Explore Examples
Using data from Census 2000
Using ACS and Census data
Looking at change over time
Additional Resources for PDQ-Explore
Indexing for Cost of Living
Variable Names across the Census, CPS, and IPUMS