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
Gloucester City, New Jersey Gloucester City, New Jersey Gloucester City is a city in Camden County, New Jersey, United States. As of the 2010 United States Census, the city's population was 11,456, reflecting a decline of 28 (-0.2%) from the 11,484 counted in the 2000 Census, which had in turn declined by 1,165 (-9.2%) from the 12,649 counted in the 1990 Census. It is located directly across the Delaware River from Philadelphia and the Port of Philadelphia. Gloucester City was incorporated by an act of the New Jersey Legislature on February 25, 1868, from the remaining portions of Union Township, which was then dissolved.