Sula is a census-designated place (CDP) in Ravalli County, Montana, United States. It is named after the community of Sula, which it encompasses, and was established about 2010, prior to that year's census. As of the 2020 census, Sula had a population of 41.
The area was originally called Ross's Hole from Alexander Ross, a Hudson's Bay Company fur trader who had traveled through the area in spring 1824. In 1889, settlers named the post office after Ursula (Sula for short) Thompson, purportedly the first non-Indian child born in Ross's Hole.
Sula is located along U.S. Route 93 in southern Ravalli County. It lies along the East Fork of the Bitterroot River at the west end of Ross' Hole, a wide valley surrounded by mountains. It is north along U.S. 93 to Hamilton, the county seat, and south over Lost Trail Pass to Salmon, Idaho.
According to the United States Census Bureau, the CDP has a total area of , of which is land and , or 1.09%, is water.
This climatic region is typified by large seasonal temperature differences, with warm to hot (and often humid) summers and cold (sometimes severely cold) winters. According to the Köppen Climate Classification system, Sula has a humid continental climate, abbreviated "Dfb" on climate maps.
Darby K-12 Schools is the area school district.