Helena /ˈhɛlɨnə/ is the capital city of the U.S. State of Montana and the county seat of Lewis and Clark County.[4] The 2010 census put the population at 28,190[5] and the Lewis and Clark County population at 63,395.[6] Helena is the principal city of the Helena Micropolitan Statistical Area, which includes all of Lewis and Clark and Jefferson counties; its population is 77,414 according to the 2014 Census Estimate.[7]