Ridge, MontanaRidge is an unincorporated community in Carter County, Montana, United States. It is located approximately south of Boyes, and about east of Biddle. Its elevation is 3,970 feet.GeographyRidge appears on the Belle Creek South U.S. Geological Survey Map. Carter County is in the Mountain Time Zone.ClimateAccording to the Köppen Climate Classification system, Ridge has a semi-arid climate, abbreviated "BSk" on climate maps.