Richville
- County:
- St. Lawrence County
- County Seat:
- No
- Area (mi²):
- 0.738
- State:
- New York
Richville is a village located in St. Lawrence County, New York. Richville has a 2026 population of 259. Richville is currently declining at a rate of -0.77% annually and its population has decreased by -2.63% since the most recent census, which recorded a population of 266 in 2020.