How heavy should a nine year old be?

According to the Centers for Disease Control and Prevention (CDC), the average weight for a nine-year-old boy is between 55 and 80 pounds, and the average weight for a nine-year-old girl is between 50 and 75 pounds. However, it is important to note that these are just averages, and there is a wide range of healthy weights for children of this age. Some factors that can affect a child's weight include genetics, diet, and activity level. If you are concerned about your child's weight, it is best to talk to your doctor.