Fact: Stand Your Ground is the law in 38 states. Those states are: Alabama, Alaska, Arizona, California, Colorado, Florida, Georgia, Idaho, Illinois, Indiana, Kansas, Kentucky, Louisiana, Michigan, Mississippi, Montana, Nevada, New Hampshire, New Mexico, North Carolina, North Dakota, Pennsylvania, Oklahoma, Oregon, South Dakota, Tennessee, Texas, Utah, Virginia, Washington, West Virginia, and Wisconsin.
The other 12 states also have some version of Stand Your Ground, but it is limited in some states to when you are in your home, in other states to your home or vehicle, in other states home, vehicle, and workplace, and in other states it includes other peoples' homes as well.
Not every one of these states passed a law called "Stand Your Ground." Some states, like California (I am a California criminal defense attorney), have Stand Your Ground based on case law handed down by the courts over decades and centuries. Other states, also including California, have Stand Your Ground codified into their justifiable homicide statutes. Some passed it by voter initiative and others passed it through legislative acts. But, 38 states have no duty to retreat from any place where you have a right to be. The other 12 have no duty to retreat in certain places.