Piermont is a village incorporated in 1847 in Rockland County, New York, United States. Piermont is in the town of Orangetown, located north of the hamlet of Palisades, east of Sparkill, and south of Grand View-on-Hudson, on the west bank of the Hudson River. The population was 2,510 at the 2010 census. Woody Allen set The Purple Rose of Cairo, a fictional film within The Purple Rose of Cairo in Piermont.The village's name, in earlier years known as Tappan Landing, was given by Dr. Eleazar Lord, author, educator, deacon of the First Protestant Dutch Church and first president of the Erie Railroad. It was derived by combining a local natural feature – Tallman Mountain – and the most prominent man-made feature of the village – the long Erie Railroad pier.