Dansville is a village in the town of North Dansville, with a small northern part in the town of Sparta in Livingston County, in western New York, United States. As of the 2020 census, the village population was 4,433. The village is named after Daniel Faulkner, an early European-American settler. Interstate 390 passes the west side of the village.
A spa was opened in 1854, eventually attracted many prominent people to Dansville for the water cure. After a quick series of unsuccessful owners, it was purchased in September 1858 by new owners who recruited James Caleb Jackson as the physician-in-charge. He was assisted by his wife, known as "Mother Jackson", and their adopted daughter, Dr. Harriet Newell Austin. A Jackson family operation for many years, the family referred to it as the Jackson Sanatorium by 1890.
*Harriet N. Austin, physician and dress re