* Updates for this datas series are not available because this is a one time study conducted by the Tax Foundation; used with permission. Only one year of data is available for this data series. Visit their website to see more tax-related research.
Years Available: 2005-2007, 2007-2009, 2008-2010
Permanent Link: http://data.sagepub.com/sagestats/6075
General Notes: *Median value gives the value for the "average" county included in this Tax Foundation study, the 50th percentile of all counties with a population of 20,000 or more. A # symbol indicates the following: Data value is considered of medium reliability due to sampling error; use with caution. Coefficient of variation is between 15 and 30 based on 90% confidence interval. !Data value is considered of low reliability due to sampling error; use with great caution. Coefficient of variation is over 30 based on 90% confidence interval.