Castorland is a village in Lewis County, New York, United States; it is north of Lowville and southeast of Carthage.

The name stems from a colony of refugees from the French Revolution, established in 1792 to provide a new home away from the violence in France.

"Castorland" is a literal translation of the old Indian name of the area, Couch-sach-ra-ga.[3] Due to many reverses, including harsh winters, poor planning, and loss of livestock and funds, the colony was dissolved in 1814.

Many of the original settlers from the Castorland colony returned to Europe or moved to larger communities.

According to the United States Census Bureau, the village of Castorland has a total area of 0.3 square miles (0.8 km2), all land.

In 1796 the Paris Mint struck a half dollar-sized token (jeton) to commemorate the "Franco-American Colony".