Lake Pleasant is a town in Hamilton County, New York, United States. The population was 897 at the 2020 census. It contains the hamlet of Lake Pleasant, the county seat of Hamilton County.

Hamilton County is a county in the U.S. state of New York. As of the 2020 census, the population was 5,107, making it the least populous county in New York. With a land area nearly the size of Delaware, it is the least densely populated county east of the Mississippi River. Its county seat is Lake Pleasant. The county was created in 1816 and organized in 1847. The county is part of the North Country region of the state.