Hinsdale is an unincorporated community and census-designated place in Valley County, Montana, United States. The town's population was 217 and the community's population as a whole was 583 as of the 2010 census. The community is located on the Milk River and U.S. Route 2, with Montana Highway 537 headed north out of town and South Bench Road crossing the railroad tracks and running south of town. Hinsdale has a post office with ZIP code 59241.