Sanford is a city in the central region of the U.S. state of Florida. It is the county seat of Seminole County. As of the 2010 U.S. Census, the city had a population of 53,570. It is a principal city of the OrlandoKissimmeeSanford, FL Metropolitan Statistical Area, which was home to 2,134,411 people as of the 2010 U.S. Census. Known as the Historic Waterfront Gateway City, Sanford sits on the southern shore of Lake Monroe at the head of navigation on the St. Johns River. Native Americans first settled in the area thousands of years before the city was formed. The Seminoles would arrive in the area in the 18th century. During the Second Seminole War in 1836, the United States Army established Camp Monroe and built a road that is currently known as Mellonville Avenue. The city sits approximately 20 miles (32km) northeast of Orlando. Sanford is home to Seminole State College of Florida and the Central Florida Zoo and Botanical Gardens. The Orlando Sanford International Airport, which headquarters the Aerosim Flight Academy (formerly the Delta Connection Academy), functions as the secondary commercial airport for international and domestic carriers, in the Orlando metropolitan area. To support the city's green initiatives, Sanford has added five electric car charging stations. In 2012, the city launched the "Imagine Sanford" initiative, which asks all Sanford residents to get involved in city planning by submitting and voting on improvement ideas via the city's Imagine Sanford website. The city of Sanford also launched a redesigned city government website in 2012.