Belt is a town in Cascade County, Montana, United States. The population was 633 at the 2000 census. It is part of the Great Falls Metropolitan Area. The current mayor is John Masonovich. The town is home to Belt Elementary School, Belt Middle School and Belt High School (sometimes called Belt Valley High School), collectively known as Belt School. Currently Kathleen Prody is the superintendent and Dan McGee is the principal. The current school building was built in 1949, though several major additions have followed, the most recent of which was completed in the late '90s. The town's main street is called 'Castner Street' after its founder, John Castner. The street is home to the majority of the town's businesses, notably the Belt Creek Brew Pub, Belt Valley Grocery, and the Belt Creek Cafe.