Ladd Drummond’s height does not seem to have been publicly known. His wife’s height is known, and based on photos of him standing next to her, he is most likely between 5′ 11″ and 6′ 1″.
Ree Drummond, the host of “The Pioneer Woman” on The Food Network, is married to Ladd Drummond. According to the Internet Movie Database, Ree is 5′ 9″ tall. Ladd is plainly a couple inches or less taller than his wife. The height differential is tough to observe because he frequently wears a cowboy hat in pictures with his wife, but it is there.