Burlington is the most populous city in the U.S. state of Vermont and the seat of Chittenden County. It is located 45 miles (72 km) south of the Canada–United States border and 94 miles (151 km) south of Montreal. The population was 42,417 as of the 2010 census. It is the least populous city to be the most populous city in a state.
A regional college town, Burlington is home to the University of Vermont (UVM) and Champlain College, a small private college. Vermont’s largest hospital, the UVM Medical Center, is located within the city limits. The City of Burlington also has Vermont’s largest airport, the Burlington International Airport, in neighboring South Burlington. In 2015, Burlington became the first city in the U.S. to run entirely on renewable energy.