Decker is an unincorporated community in Big Horn County, Montana, United States.
The community is located along Secondary Highway 314, 15.5 miles (24.9 km) north-northeast of Sheridan. Decker has a post office with ZIP code 59025.[2] The community is home to a one-room public school, the Spring Creek School; it has nine pupils and is one of 200 remaining one-room public schools in the United States.[3]
In the late 1930s, the State Water Conservation Board constructed the Tongue River Dam, creating a reservoir just north of Decker.[4]
According to the Köppen Climate Classification system, Decker has a semi-arid climate, abbreviated "BSk" on climate maps.[5]
Media related to Decker, Montana at Wikimedia Commons