This is a list of U.S. states by intentional homicide rate. US territories can be found at List of countries by intentional homicide rate. The homicide rate is typically expressed in units of deaths per 100,000 individuals per year; a homicide rate of 4 in a population of 100,000 would mean 4 murders a year, or 0.004% out of the total. The data is from the Centers for Disease Control (CDC), and the Federal Bureau of Investigation (FBI). The reasons for the different results can be confusing. From the Reason Foundation: "While the FBI data relies on reports by law enforcement agencies, the CDC data is derived from coroners' reports, encompassing non-criminal homicides such as cases of self-defense. Consequently, the CDC mortality data shows a slightly higher number of homicides annually compared to the FBI data." The agency quotes below make more sense in light of this. The CDC reports all homicides, and does not indicate whether it was justified or self-defense. To a coroner a homicide is a homicide, regardless of the reason.