Helmville is situated on the west side of the Continental Divide near Nevada Creek where it empties into the Blackfoot River. It was named for an area settler, Henry Helm. The first post office was established in 1872 with Alvin Lincoln as postmaster. Helmville holds a widely known annual celebration, the Labor Day Rodeo.
Helmville is located in western Montana, on the west side of the Continental Divide, south of Lincoln off Montana Highway 141..