Grantsdale is an unincorporated community in Ravalli County, Montana, United States.

Grantsdale is located near U.S. Route 93 and Montana Highway 38, 3 miles (4.8 km) south of Hamilton.

The community had a post office until October 29, 1988; it retains its own ZIP code, 59835.

[2][3] Initially called Skalkaho Creek, the town became Grantsdale in about 1888 after H. H. Grant, the town's founder.

This Ravalli County, Montana state location article is a stub.