Marlboro is a hamlet in Ulster County, New York, United States. The population was 3,669 at the 2020 census. Marlboro is in the southeastern part of the town of Marlborough, located in the southeastern corner of the county.
AdHuge Selection of Auto Art. The Finest Precision Diecast Models - Shop Now! Largest Authorized Dealer in the World of Precision Diecast Models - Shop Now!