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 (1984) 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.
Sparkill Creek cuts through the north end of the Hudson Palisades, providing easy access to the fertile valley of the unnavigable upper Hackensack River. "Tappan Landing," "Tappan Slote", or "Taulman Landing," as the little port on the Hudson River was called, thus became the original port for southern Orange County. The valley in the Palisades created by the creek also provided a way for the Erie Railroad to easily reach the Hudson, and the railroad built a long pier in 1839 as its principal terminal.