Babb is an unincorporated farming and ranching community in Glacier County, Montana, United States, on the Blackfeet Indian Reservation. The community experiences a large influx of tourists in the summer months as it is the gateway to the Many Glacier area of Glacier National Park. For statistical purposes, the United States Census Bureau has defined Babb as a census-designated place (CDP). As of the 2020 census, Babb had a population of 130.
Community infrastructure includes one school (Babb Elementary School), a U.S. Post Office, a fire station that houses the Babb/St. Mary Volunteer Fire Department, Thronson's General Store and Motel, several restaurants, two churches, and a gas station. Alcohol is not sold in Babb.
Established in 1905 as a post office, the town of Babb was named for Cyrus C. Babb, the engineer in charge of surveying the U.S. Reclamation Service's St. Mary Irrigation Canal. The canal siphoned water from the St. Mary River into the Milk River and was one of the first Bureau of Reclamation projects in the nation.
Babb is located in northwestern Glacier County in the valley of the St. Mary River. U.S. Route 89 passes through the community, leading north to the Canadian border at Piegan and south to St. Mary. Many Glacier Road leads west from Babb to the border of Glacier National Park at the east end of Lake Sherburne and continues west to the Many Glacier Hotel.
According to the U.S. Census Bureau, the Babb CDP has a total area of , of which is land and , or 0.78%, is water.