It is not height but weight that determines when you can sit in the front seat.
(I think)
In Texas, children under the age of eight, unless they are taller than 4 feet 9 inches, must be secured in a child passenger safety seat system. This requirement is for their safety in the event of a car accident.
At least 4 feet 9
You have to be 5 years or older or over 36 inches to ride in the front seat.
Children who are about 80 pounds can sit in the passenger seat in Utah
Well when I wanted to sit in the fornt seat my mother told me I had to be around 100 pounds, it doesnt really matter how tall you are, but a lot of children get away with sittting in the front seat and they are only around 60 - 70 pounds
12
In Texas, a child can legally sit without a car seat once they reach 8 years old or at least 4 feet 9 inches tall. It is recommended to follow safety guidelines and use a booster seat until the seat belt fits properly without it.
over 100lbs
Open the door, and sit beside the driver in the passenger seat
passenger's seat
In NZ, where I live, sitting in the front passenger seat is standard practice.