Sierra McCormick is a 27-year-old from Asheville, North Carolina, U.S.. We trawled the web to determine that Sierra McCormick's height is 5ft 1 (154.9 cm). This makes him 8.1 inches shorter than the average male in the United States. Are you looking for more information about Sierra McCormick and his career? We found resources at imdb.com & twitter.com.