Rensselaer Falls
- County:
- St. Lawrence County
- County Seat:
- No
- Area (mi²):
- 0.291
- State:
- New York
Rensselaer Falls is a village located in St. Lawrence County, New York. Rensselaer Falls has a 2026 population of 319. Rensselaer Falls is currently growing at a rate of 0.95% annually and its population has increased by 0.31% since the most recent census, which recorded a population of 318 in 2020.