Plains (Salish: ncc̓kʷi[3]) is a town in Sanders County, Montana, United States.

The name was later shortened to Plains when the US Postal Service established a presence in 1905.

According to the United States Census Bureau, the town has a total area of 0.60 square miles (1.55 km2), all land.

[8] This climatic region is typified by large seasonal temperature differences, with warm to hot (and often humid) summers and cold (sometimes severely cold) winters.

Of all households 43.8% were made up of individuals, and 16.8% had someone living alone who was 65 years of age or older.

Of all households 32.4% were made up of individuals, and 16.7% had someone living alone who was 65 years of age or older.

Plains Public Schools educates students from kindergarten through 12th grade.

There are also numerous community youth organizations and clubs including soccer, baseball, softball, drama, and art.

[16] The Sanders County Ledger is a local newspaper [17] along with the Clark Fork Valley Press.