Richville is a village in St. Lawrence County, New York, United States.

[2] According to the United States Census Bureau, the village has a total area of 0.7 square miles (1.8 km2), all land.

The Oswegatchie River flows northward past the western side of the village.

20.2% of all households were made up of individuals, and 5.5% had someone living alone who was 65 years of age or older.

About 8.6% of families and 7.4% of the population were below the poverty line, including 4.4% of those under the age of eighteen and 8.8% of those 65 or over.