Oilmont is on the lower end of the Sunburst Oil Field. The name is a composite of that always exciting commodity, oil, and the name of the state.
Oilmont is located north of Hi-Line towns of Shelby and Cut Bank. Hi-Line is a much-used Montana term which indicates both the route laid out by the Great Northern Railroad and US Highway 2 where it traverses the windswept, glaciated plains and shallow valleys of northern Montana. (from Cheney's Names on the Face of Montana, Mountain Press Publishing Company)
North of Oilmont is the Sweet Grass Hills, known by many names over the years: the Blackfeet referred to this island range as Kato-yi-six, "Sweet pine hills". The current name, Sweet Grass Hills, refers to Hiero-chloe odoratta, a native grass abundant in the area, used for ceremonial purposes. (Copyright 2009, Montana Historical Society: Montana Place Names from Alzada to Zortman, Montana Historical Society Research Center Staff)
