Florence is a ghost town in Idaho County, Idaho, United States. About 14 air miles (22 km) east-northeast of present-day Riggins in remote north central Idaho at an elevation of 6,080 feet (1,850 m). It was settled as a mining camp in the winter of 1861. Almost concurrent with its settlement, Washington Territory established Idaho County on December 20, 1861, in anticipation of a gold rush that brought over 9,000 residents within the first year., The town quickly became the seat with the first district court taking place at Florence on 22 September 1862. While the rich placer gold fields in the Florence Basin brought thousands of prospectors and contributed to the establishment of Idaho Territory in 1863, the rush to Florence was short-lived as intensive mining depleted the richest ground. At the first census of Idaho Territory, only 575 residents remained. By the territorial census of 1864, the population dwindled further to 254 residents. Even in its decline, Florence continued as the county seat until 1 June 1869 when the territorial legislature moved the county seat to the Warren's Camp settlement of Washington. The town thrived again from 1895–1900, based more on lode mining. Then the town slowly faded away, having only ten inhabitants in 1940, and was totally abandoned sometime after 1951.

Idaho County is a county in the U.S. state of Idaho, and the largest by area in the state. As of the 2020 census, the population was 16,541. The county seat is Grangeville. Previous county seats of the area were Florence (1864–68), Washington (1868–75), and Mount Idaho (1875–1902).