According to the U.S. Center for Disease Control and Prevention, the average height of a human male is 69.3 inches, and the average height of a female is 63.8 inches, as of 2014. So the average height of a person is 66.5 inches.
The average height for a person varies around the world. For example, Indonesia has the lowest average male height (62 inches) and Bolivia has the lowest average female height (58 inches). The Netherlands have the highest height for both male and females, with an average male height of 72.5 inches and an average female height of 67 inches.