Belgrade is a city in Gallatin County, Montana, United States. The population was 5,728 at the 2000 census. The original townsite of Belgrade was established and filed in the Gallatin County Clerk and Recorder's Office by Thomas B. Quaw, a businessman from the midwest, in July 1881. According to Quaw, the townsite was a blind railroad siding nine and seven tenths miles west of Bozeman, and was named Belgrade after the capital of Serbia as an expression of appreciation to Serbian investors who helped finance a portion of the Northern Pacific Railroad. Belgrade was incorporated in 1906. Gallatin Field Airport is located adjacent to the city boundaries.