The U.S. Census Bureau last week released results from a study comparing the ACS data from
1999 - 2001 in the 36 test counties to the corresponding Census 2000 sample data. These
estimates, along with measures of data quality, were compared at the county and census
tract level. In addition to the analytical reports, the associated data tables and files
are available on the ACS web site. To access these reports, please visit
These reports are probably the first look at small area data from ACS, and are very
important for all of us to examine. To start a discussion on these reports, I quickly
prepared a one page summary of *my observations* on each report (See attached MS Word
document "Report_Summary.doc"). Please note that I wrote this just for
discussion purposes, and I hope I did not mis-characterize any of the reports.
For those of you preparing responses to the Federal Register Notice on ACS - Current, and
Proposed Tables, the last date for comments is July 14, 2004.