Jack Skellington's height is not officially stated in the film or by its creators, but fan estimates and various references place him generally between 7 to 11 feet tall. Some fans suggest a height around 7 to 9 feet, while others propose he could be as tall as 11 feet based on comparisons within the film and related contexts. One source even mentions an estimate as high as 24 feet, but this is less commonly agreed upon and more extreme. Most reasonable interpretations put his height roughly around 7 to 9 feet tall, emphasizing his towering and slender skeletal appearance that makes him stand out among other characters.