Billings Montana is not a capital. The state capital of Montana is Helena. Billings is the largest city in Montana with a population of 104,170 per the 2010 Census.
Helena
The address of the Montana Capitol Restoration Foundation is: Po Box 1915, Helena, MT 59624-1915
The name of the state capitol building in Cheyenne, Wyoming is "Wyoming State Capitol" or "Wyoming State Capitol Building".
Helena is the Capitol of Montana USA
Helena is a city and is the capitol of Montana
Montana State University is located in the state of Montana.
Baton Rouge is the state capitol of Louisiana.
Helena, Billings, Bozeman, Kalispell, Missoula. (all in Montana)
Minnesota State Capitol
The legislative building is called the state capitol and may be called the State House.
The state capitol (legislature building) is in the state capital (city), which is Harrisburg.