US Census Bureau
Skip top of page navigation

People Business Geography Newsroom Subjects A to Z Search@Census

American Community Survey (ACS)

Skip top of page navigation
  Census > ACS Main > How to Use the Data > Accuracy of the Data

  
How to Use the Data Main

ACS and Intercensal Population Estimates

The ACS Compass Products

Comparing ACS Data to Other Sources

Subject Definitions

Accuracy of the Data

Quality Measures
 >Sample Size:
     > Data
     > Definitions
 >Coverage Rates:
     > Data
     > Definitions
 >Response Rates:
     > Data
     > Definitions
 >Item Allocation Rates:
     > Data
     > Definitions

ACS Group Quarters
  » 2006 GQ Data Products

Errata
  » ACS 2000 Errata (11/7/02)
  » ACS 2000 Errata (3/25/02)

User Notes
  » ACS 1999 Limitations
  » ACS 2000 Notices

Geography Explanation

Data Products Details

Using Data from the 2006 ACS [PDF]

ACS Summary File
  » Technical Documentation

  

Accuracy of the Data

These documents provide data users with a basic understanding of the sample design, estimation methodology, and accuracy of the data.

2005-2007 ACS 3-Year Accuracy [PDF 160k]

2007 Accuracy [PDF 180k]


Prior Years

2006 Accuracy [PDF 180k]

2005 Accuracy [PDF 155K]

2004 Accuracy [PDF 54K]

2003 Accuracy [PDF 54K]

2002 Accuracy [PDF48K]

2002 and beyond Change Profile Accuracy [PDF 22K]

2000 - 2001 Change Accuracy [PDF 97K]

2001 Accuracy - ACS Comparison Test Counties [PDF 519K]

2001 Accuracy - 2001 Supplementary Survey (SS01) [PDF 112K]

 

2000 Accuracy - ACS Comparison Test Counties [PDF 521K]

2000 Accuracy - Census 2000 Supplementary Survey (C2SS) [PDF 123K]

1999 Accuracy [PDF 378K]

1998 Accuracy (HTML Format)

1997 Accuracy (HTML Format)

1996 Accuracy (HTML Format)

2 Year Averages [PDF 16K]

3 Year Averages [PDF 15K]

Percent Changes [PDF 17K]

Estimates for 1996-1997 Data Products [PDF 21K]
 

[PDF] or PDF denotes a file in Adobe’s Portable Document Format. To view the file, you will need the Adobe® Acrobat® Reader This link to a non-federal Web site does not imply endorsement of any particular product, company, or content. available free from Adobe. This symbol Symbol indicating that file is external to this site. indicates a link to a non-government web site. Our linking to these sites does not constitute an endorsement of any products, services or the information found on them. Once you link to another site you are subject to the policies of the new site.

 
Source: U.S. Census Bureau  |  American Community Survey Office  |  Page Last Modified: April 30, 2009