The maps, based on data from the U.S. Centers for Disease Control and Prevention , show the average number of gun deaths per 100,000 county residents from 2004 through 2010. Red is for counties with rates above the median for all counties; blue is below median. Gray indicates counties for which the CDC did not release data because the numbers were small. Scroll down for maps separating suicides from homicides. Read more about these maps and check out more related graphics