There is no legal requirement for this. The child needs to be safe, feel safe and know how to take care of themselves if there is a problem. Most authorities feel that a 12 or 13 year old can be left at home for a few hours during the daytime.
Legal Age (Updated)
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 Home Alone Children Legal 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.
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