Moriches is served by the William Floyd School District.
The name "Moriches" comes from Meritces, a Native American who owned land on Moriches Neck.
One of the community's most famous businesses/landmarks was the Jurgielewicz Duck Farm founded in 1919 on the edge of the Forge River. At its peak the farm located on the edge of the Montauk Branch of the Long Island Rail Road claimed to be America's largest free-range duck operation, raising 1 million Pekin ducks a year. In 2011, it declared bankruptcy, and it closed in August 2011.