Caston first appears in the U.S. registration record in 1919. Its popularity climbed over the following decades. In 2017, 33 babies received the name (ranked #3393). Today it sits well outside the top 1,000 (around #4770), with roughly 22 babies named Caston each year. Caston's usage has held roughly steady recently. In total, around 540 babies have been registered with this name since 1880.