Homicide rates per 100,000 by state. US map. US Centers for Disease Control and Prevention (CDC).
Own work from Homicide Mortality by State. National Center for Health Statistics. US Centers for Disease Control and Prevention. District of Columbia. N/A states: New Hampshire. Vermont. Wyoming. 

Template map of U.S. states and District of Columbia.svg
Timeshifter from template: File:Template map of U.S. states and District of Columbia.svg and instructions: File talk:Template map of U.S. states and District of Columbia.svg/Instructions. See: en:User:Timeshifter/Sandbox210