This document compares uninsured rates in the United States and each state in 2010 and 2011 based on data from the Current Population Survey. It shows the uninsured percentage, standard error, and whether changes from 2010 to 2011 were statistically significant for each location. Nationally, the uninsured rate decreased slightly from 16.3% to 15.7% over this period. Rates decreased significantly in some states like Massachusetts and Mississippi but increased in a few others such as Colorado and New Hampshire.