Abstract. Reference range for head circumference on the Tanner charts do not go beyond age In this study the head circumference and heights of adults.
Average Adult Head Sizes in Australia. According to Wikipedia, one study in the United States shows, the average adult head circumference to be 55cm (21 3⁄4) .
Head breadth, 1, The maximum breadth of the head, Static adult human physical characteristics of the head - redrawn.