Manhattan boroughs N Y Cy. Located primarily Manhattan Island mouth Hudson River, boundaries borough identical those N Y County, original county state N Y. I consists Manhattan Island several small adjacent islands: Roosevelt Island, Randall's Island, Ward's Ind, Governors Island, Liberty Island, p Ellis Island, U Thant Island; Marble Hill, small section mainland Bronx. T original y N Y began southern Manhattan, expanded 1898 include surrounding counties. I smallest y urbanized boroughs.

T County N Y densely populated county United States, densely populated areas world, 2008 population 1,634,795 living 22.96 square miles (59.47 ˛), 71,201 residents p square (27,485/km˛). I wealthiest counties United States, 2005 personal income p capita above $100,000. Manhattan third-largest N York's boroughs population.

Manhattan major commercial, financial, cultural center United States world. My major radio, television, telecommunications companies United States based here, y news, magazine, book, other media publishers. Manhattan y famous landmarks, tourist attractions, museums, universities. I headquarters United Nations. Manhattan largest central business district United States, N Y Stock Exchange NASDAQ, largest number corporate headquarters country. I center N Y Cy N Y metropolitan region, hosting y government large portion area's employment, business, entertainment activities. A result, residents N Y City's other boroughs Brooklyn Queens often refer p Manhattan "going city".