Massena
- County:
- St. Lawrence County
- County Seat:
- No
- Area (mi²):
- 4.53
- State:
- New York
Massena is a village located in St. Lawrence County, New York. Massena has a 2026 population of 9,998. Massena is currently declining at a rate of -0.8% annually and its population has decreased by -2.45% since the most recent census, which recorded a population of 10,249 in 2020.