It varies with state laws. Check with your local DMV office.
in the uk the child has to be 142cm tall.
12years old
100
the child should be at least 9 to ride in the front seat
13
13
You have to be at least ten years or older to sit in the front seat and weigh at least eighty-five pounds
There is no minimum weight required by law for a child to sit in the front passenger seat in Oregon. It is strongly recommended that the child be at least 12 years old before riding in the front. The air bags can cause serious injury to a child smaller than this. Currently laws are only in effect for children that need to ride in safety seats.
12 years old or older can sit in the front seat in the USA
about 60 pounds and about 4 feet tall.
12
6 and older but less than 16 . and children under age 6 , who may weigh more than 60 lbs is aloud to sit in the passenger seat .