Danville is a borough in Montour County, Pennsylvania, USA, of which it is the county seat, on the North Branch of the Susquehanna River. Danville was home to 8,042 people in 1900, 7,517 people in 1910, and 7,122 people in 1940. The population was 4,897 at the 2000 census. . Danville is part of the Bloomsburg–Berwick Micropolitan Statistical Area.