"In Oklahoma, there is no fixed age when a child can be left alone. Some are unable to take care of themselves even though they may be older than other children."
- Lawton (Oklahoma) Police Department
There are very few states in the U.S. with legal minimum ages for children home alone, but many state agencies have published guidelines. Georgia, Illiniois, Maryland and Oregon are a few of the states with specific ages mentioned in their laws.
12 years of age appears to be the most common recommendation. Below in Related Links is an article entitled Latchkey Kids Age Limits which provides one guideline from a California agency representative who suggests that 8 year olds and over can be left at home for up to several hours (usually after school before a parent gets home from work). This site also provides a state by state comparison with references.