Burlington is a city in, and county seat of, Chittenden County, Vermont, United States. It is located 45 miles (72 km) south of the Canada–United States border and 95 miles (153 km) south of Montreal. As of the 2020 United States census, the population was 44,743. It is the most populous city in Vermont.
A regional college town, Burlington is home to the University of Vermont (UVM) and Champlain College. Vermont's largest hospital, the UVM Medical Center, is within the city limits. The City of Burlington owns Vermont's largest airport, the Patrick Leahy Burlington International Airport, located in neighboring South Burlington. In 2015, Burlington became the first city in the U.S. to run entirely on renewable energy.