The county in which Helena Valley Southeast, Montana is located had a population of what in 2010?
Helena Valley Southeast, Montana Helena Valley Southeast is a census-designated place (CDP) in Lewis and Clark County, Montana, United States. The population was 8,227 at the 2010 census. It is part of the Helena Micropolitan Statistical Area.
Beaverhead County, Montana Beaverhead County is the largest county by area in the U.S. state of Montana. As of the 2010 census, the population was 9,246. Its county seat is Dillon. The county was founded in 1865.