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 Custer towards his brother Armstrong's personal battle flag and handed the captured flag to one of Armstrong's aides while declaring, "Armstrong, the damned rebels shot me, but I've got my flag." Custer turned his horse to rejoin the battle, but Armstrong (who had only seconds before seen another of his aides be shot in the face and fall from his horse dead) ordered Custer to report to the surgeon. Tom ignored the order and his brother placed him under arrest, ordering him to the rear under guard. Until 1948, official references for the date of actions for which Thomas Custer was