Florence, IndianaFlorence is an unincorporated census-designated place in Switzerland County, Indiana|York Township], Switzerland County, in the U.S. state of Indiana.HistoryThe community was laid out in 1817 under the name New York. A post office was established under this name in 1827, and was renamed to Florence in 1847. The post office is still currently operating.GeographyClimateThe climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Florence has a humid [subtropical climate], abbreviated "Cfa" on climate maps.