geographic location geographic location State of Montana A state in the Western United States. To the north, Montana and Canada share a 877 km border. The state borders the Canadian provinces of British Columbia, Alberta, and Saskatchewan. To the east, the state borders North Dakota and South Dakota. To the south is Wyoming and to the west and southwest is Idaho. GAZ GAZ:00002606 GNISID:00767982 INCITS38:30 ISO3166-2:US-MT MT Mountain Division