How much of the body is made up of bones? August 2, 2020 by Pamela Landy Strong and light, the skeleton of the average person accounts for less than 20 percent of body weight. Related Answers What is the correct pronunciation of the name Edward Said? Was there a real Mr. Micawber? Where does Jacques Derrida teach? How did Thomas Chatterton (1752-70) die? What was the name of the high school in “Room 222” (ABC, 1969-74)? Is there any bone in the body that does not connect with other bones?