Sampling error is very large for most Arizona counties in the American Community Survey. Read a nontechnical discussion of the accuracy of the ACS.

Sampling error is very large for most Arizona counties in the American Community Survey. Read a nontechnical discussion of the accuracy of the ACS.

The decennial census count for Arizona of 6,392,017 on April 1, 2010 is considerably less than the latest population estimates, which are for July 1, 2009. In this edition of Indicator Insight, author Tom Rex examines the possible reasons for the large census count discrepancy and its implications for Arizona.

Arizona’s performance on environmental indicators of sustainability; EPA standards for air and water quality, urban heat island trends, and the breakdown of energy production and use in Arizona.