Ravalli is an unincorporated community on the Flathead Indian Reservation in Lake County, Montana, United States. As of the 2020 census, Ravalli had a population of 85. For statistical purposes, the United States Census Bureau has defined Ravalli as a census-designated place (CDP). In the early 1900s, the Pablo-Allard herd in Ravalli was said to be the largest collection of the bison remaining in the U.S. and played a critical role in the conservation of bison.