Plessis, New York

Plessis is a hamlet and census-designated place in the town of Alexandria in Jefferson County, New York, United States. Its population was 164 as of the 2010 census. Plessis had a post office from September 16, 1823, until March 26, 2011; it still has its own ZIP code, 13675. New York State Route 26 passes through the community.

Geography
According to the U.S. Census Bureau, the community has an area of 0.346 mi2, all land.