Geography of New York City the coast of the Northeastern United States at the mouth of the Hudson River in southeastern New York state. It is located in the New York–New Jersey Harbor Estuary, the centerpiece of which is the New York Harbor, whose deep waters and sheltered bays helped the city grow in significance as a trading city. Much of New York is built on the three islands of Manhattan, Staten Island, and western Long Island, making land scarce and encouraging a high population density. The Hudson River flows from the Hudson Valley into New York Bay, becoming a tidal estuary that separates the
New City, New York CDP/hamlet in the state of New York. New City is the county seat, and most populous community of Rockland County and the location of the Clarkstown Police Department, Sheriff's office and corrections facility. The downtown area is one of the main business districts in the county. The ZIP code of New City is 10956. New City is located at (41.145495, −73.994901). New City is accessible from major Rockland arteries providing rapid access to Bergen County, New Jersey, Westchester County, New York, Manhattan, and the Bronx in New York City. Before the Revolutionary War, the land that would later become known