Custer, Montana Custer, Montana Custer is a census-designated place (CDP) in Yellowstone County, Montana, United States. The population was 145 at the 2000 census. This community bears the name of U.S. Army General George Armstrong Custer who was defeated and killed at the Battle of Little Big Horn, which took place nearby in 1876. Custer is located at (46.128870, -107.556302). According to the United States Census Bureau, the CDP has a total area of , all of it land. According to the Köppen Climate Classification system, Custer has a semi-arid climate, abbreviated "BSk" on climate maps. As of the census of 2000,
Thomas Bailey Marquis the property. He began publishing his own pamphlets for sale at the museum and the Custer battlefield. Titles in 1933 were: "Sketch Story of the Custer Battle", "She Watched Custer's Last Battle", "Custer Soldiers Not Buried", and "Which Indian Killed Custer?", in 1934 "Sitting Bull and Gall the Warrior", and in 1935 "Two Days After the Custer Battle". In December 1933, Marquis began his last book, "Keep the Last Bullet for Yourself: The True Story of Custer's Last Stand". Marquis considered this his most important work – the subject was his central interest and he regarded much of his previous