It depends on the law of yoru state. All states are not the same.
As far as I know, any child under the age of 12 should not ride in the front seat. Especially if you have a passenger air bag.
10 years
from the age 12 up
12
In Kentucky, a child can legally ride in the front seat of a vehicle when they are at least 40 inches tall, which typically occurs around the age of 4 or 5. However, it is recommended that children under the age of 13 ride in the back seat for safety reasons. Additionally, parents should ensure that the vehicle's airbag is turned off if the child is in the front seat and is using a car seat or booster seat. Always refer to the latest local laws and guidelines for the most current information.
13
12
12
10
In Arizona, children under the age of 8 must be secured in a child safety seat or booster seat in the back seat of a vehicle. However, if the vehicle does not have a back seat, a child may ride in the front seat, but it is recommended to ensure that the airbag is deactivated for their safety. Always prioritize using appropriate safety restraints for the child's age and size.
Nevada children under the age of 12 need to be properly restrained in the back seat
12 years or older. They are mature enough.