Average Height & Weight for 11-Year-Old Boys: CDC Data

According to the Centers for Disease Control and Prevention (CDC), the average height of an 11-year-old boy in the United States is 53.1 inches (135 centimeters). The average weight is 87.4 pounds (39.6 kilograms). However, it is important to note that these are just average values, and individual boys may vary significantly from these norms.