Millbrook is a village in Dutchess County, New York, United States. It is located on the same side of the Hudson River as Poughkeepsie, Hopewell Junction, East Fishkill, and Wappingers Falls. It is most commonly referred to as the low-key version of the Hamptons, and is one of the most affluent towns in New York State. As of the 2010 Census, Millbrook's population was 1,452. 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 was settled by Quakers in the middle eighteenth century. What now comprises the village originally had two areas of settlement, Hart's Village and the hamlet of Mechanic. The area known as Hart's Village was centered around the grist mill along the East Branch of the Wappinger Creek off of Hart's Village Road. The building still stands today, and has been converted to an apartment building. The Hamlet of Mechanic is now known as South Millbrook, and is located near the junction of NY route 343 and Old Route 82 (Dutchess County route 111), where the turn monument is.
The village is from the Great Nine Partners Patent, and a street and burial ground at the south east edge of town now bear the name. Prior to the Revolutionary War, what is now known as the Town of Washington was called the Charlotte Precinct.
The Village of Millbrook, as it is known today, was developed around the Dutchess and Columbia railroad station which was located on the village green. The train station was built in 1870 on the lands of Issac Merritt, who laid out the streets soon thereafter.