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
Government of New York City in the city but run largely in the suburban counties of New York State and Connecticut. Other regional transportation is managed by the Port Authority of New York and New Jersey, including the bridges and tunnels between New York City and New Jersey, and all airports and seaports within the city. The Port Authority is jointly controlled by the Governor of New Jersey and Governor of New York. The seal of New York City, adopted in an earlier form in 1686, bears the legend , which means simply "The Seal of the City of New York". "Eboracum" was the Roman