Burlington is the most populous city in the U.S. state of Vermont and the seat of Chittenden County. It is located 45 miles south of the Canada–United States border and 94 miles south of Montreal. Its population was 42,452 according to a 2015 U.S. census estimate. Burlington is the least populous city in the U.S. to be the most populous within a state. A regional college town, the municipality is home to the University of Vermont (UVM) and Champlain College, a small private college.