Valley Falls is a village in Rensselaer County, New York, United States. The population was 466 at the 2010 census. The village lies on the boundary of the towns of Pittstown and Schaghticoke, but is mostly in the northwestern part of Pittstown.
In 1871, industrialist James Thompson built a textile mill in the village. Nearly all village residents worked in the mill and schoolchildren ran home when the mill's lunch whistle sounded. After its height of operation in the 1970s, it entered a decade of decline. The mill had been vacant for at least 10 years when it went up in flames in the early morning hours on April 22, 2009.
By 1863, Valley Falls had established itself as a mini-industrial center. In addition to the aforementioned Thompson textile mill, the village also had a blacksmith shop, farrier shop, foundry, wainwright shop, cooperage, vineyard, three general stores, and two hotels. At this time only a single rail line (Troy & Boston RR) from Troy passed th