Opheim is a town in Valley County, Montana, United States.

[3] According to the United States Census Bureau, the town has a total area of 0.21 square miles (0.54 km2), all land.

There were 69 housing units at an average density of 328.6 per square mile (126.9/km2).

46.8% of all households were made up of individuals, and 12.8% had someone living alone who was 65 years of age or older.

41.1% of all households were made up of individuals, and 23.2% had someone living alone who was 65 years of age or older.

Opheim Public School educates students from kindergarten through 12th grade.