Arcadia is a city in DeSoto County, Florida, United States.It is the county seat of DeSoto County; it is also DeSoto County's only incorporated community. On October 27, 2009, President Barack Obama visited Arcadia. He became the first sitting president to do so. The city was devastated by Hurricane Charley on Friday, August 13, 2004. According to the United States Census Bureau, the city has a total area of 4.0 square miles (10.4square kilometers), all but 0.25percent of which is land.