There are very few states in the U.S. with legal minimum ages, but many state agencies have published guidelines (Georgia, Illinois, Maryland and Oregon are a few of the states with very specific ages). Typically 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).
12 years old appears to be the most common recommendation. http://www.latchkey-kids.com/latchkey-kids-age-limits.htm provides a state by state comparison.
There is no legal age limit for leaving a child on their own, but it is an offence to leave a child alone if it places them at risk
There is no legal minimum age in which a child can be left home alone overnight in Missouri. However it is never recommended that a child younger than age 12 be left home alone at all.
what age is legal to leave your child home alone in new york
What is the legal age in ohio to leave a child home alone overnight?
Fifteen.
12
14
13
13
In Ontario, Canada it is not legal to leave a young child home alone overnight. After the age of 16, a child can be left alone over night.
10
i think 13