This is the area that is east of the divide, but this does not include Southwest Montana. Helena, the capital is in this region but the people are a hybrid between Southwest, Eastern, and Western Montana. People in Eastern. The futher east you go, the more like North Dakota it becomes, both in terms of terrain and people there being reminiscent of many Midwesterners. This area also include the Hi-Line, which forms most of the state's border with Canada.
Eastern Montana has a very small population.