Millbrook is a village in Dutchess County, New York, United States. The population is estimated at 1,551 in 2008. Millbrook is located in the Hudson Valley, an hour and thirty minute drive upstate of New York City. On its main street, Franklin Avenue, many of the village's main eateries, stores, and landmarks including the public library, can be found.
The Village of Millbrook is near the center of the Town of Washington. Until April 2008, US Route 44 passed through the village, but it was rerouted through what was route 44A. The road through the town is now unsigned reference route 984P.
Millbrook is part of the Poughkeepsie–Newburgh–Middletown Metropolitan Statistical Area as well as the larger New York–Newark–Bridgeport Combined Statistical Area.